Preparations for fully ranked taiko (and score reset), along with a load of bug fixes dominated this release. There are as usual a few new features to play with, and the impeding i18n implementation which will soon allow the whole of the osu! interface to be translated into a number of languages. You can see this in action on the song select screen already 
.
Known problems: (do not report these)
Frame limiter turned off may be slightly more laggy than before under very specific circumstances.
Per-beatmap custom cursor sprites are still not used.
Scoreboard colours are still too bright.
Pause menu arrows look a bit strange.
2009-06-28 (b695)
Interface:
(+) Added Song Selection translations for German, Spanish, Portuguese, Polish, Indonesian and Italian.
(+) Added support for downloading translations from options menu. Automatic updates via osume.
(*) Split behaviour of "hover select" to two options - select and return.
Editor:
(+) Added kiai alert to editor.
(*) Many bug fixes.
Gameplay:
(+) Taiko beats animate after 50 combo.
(*) Taiko drumrolls must be hit in time with the BPM.
(*) More stable video playback.
Misc:
(+) Touchscreen support (internal).
(*) Changed skinning engine's handling of animations to give correct priority to beatmaps over skins.
(*) The usual insane number of bug fixes.
(*) Fixed tablet support.
Full changelog:
(+) Added Song Selection translations for German, Spanish, Portuguese, Polish, Indonesian and Italian.
(+) Added a 'hold' parameter for in-game metadata display (sets how long the text line should appear for).
(+) Added a shockwave showing where cursor is clicked when touchscreen is enabled.
(+) Added arcade-specific options tab.
(+) Added bancho command for checking for multi-accounters.
(+) Added custom touchscreen support.
(+) Added kiai alert to editor.
(+) Added localization framework.
(+) Added support for downloading translations from options menu. Automatic updates via osume.
(+) Added support in editor for advanced rotation of objects by arbritrary angle.
(+) Music control on main menu now has a toggle for permanent display of song info.
(+) Taiko beats animate after 50 combo.
(+) Web: Added support for gifting subscriptions to other users.
(+) Web: Country flag in profiles is clickable.
(*) Added error handling to video decoding process. video-debug.txt is created when an error occurs, but osu! will not crash (hi strager).
(*) Automatic scrolling at song select only takes effect when mouse is inside the window (and an absolute pointing device is not in use).
(*) BSS submission pops any bubbles.
(*) Bancho fixes (stable for ]1day and counting).
(*) Bancho thread deadlock fixes (should be 100% stable now).
(*) Changed behaviour of hover selection to include the "snapping to current" behaviour.
(*) Changed skinning engine's handling of animations to give correct priority to beatmaps over skins.
(*) Dialogs are allowed to appear even during play time if extended chat is visible.
(*) Fix for ghost quits from IRC clients.
(*) Fix for sliders playing at the wrong speed (0.5x or 2x) unexpectedly.
(*) Fixed !where having no output when the user cannot be located.
(*) Fixed !where not showing city even when user allows it.
(*) Fixed "Start Chat" button adding underscores to player name in tab.
(*) Fixed 3/4 timing not being recognised correctly for main menu flash effects.
(*) Fixed Autopilot not appearing on /np output.
(*) Fixed Bancho/osu! rank overflow.
(*) Fixed File ] Open in editor not updating control points (timing sections).
(*) Fixed SBE handling of subfolders.
(*) Fixed Song Setup dialog changes not triggering a save prompt on testing.
(*) Fixed animation problems when osu! has been running for over ~150 hours.
(*) Fixed audio not loading for the current song when importing a new file.
(*) Fixed audio playing at slower speed when exiting play mode during fail sound.
(*) Fixed autoplay/autopilot not playing sliders/spinners at full speed.
(*) Fixed beatmap not saving correctly on first save.
(*) Fixed certain position in screen causing seek during gameplay.
(*) Fixed click priority on song select.
(*) Fixed clicks leaking through from extended chat to the editor.
(*) Fixed codecs error appearing when video file does not exist.
(*) Fixed cursor depth when dialogs are displayed during gameplay.
(*) Fixed cursor disappearing in some cases where custom skinning (per-beatmap) is used.
(*) Fixed distance spacing not saving to .osu files correctly in all cases.
(*) Fixed editor not changing distance spacing multiplier when opening another difficulty.
(*) Fixed editor widescreen incorrect offsets.
(*) Fixed hitting escape in multiplayer song select (as host) not resetting to previously selected map.
(*) Fixed holding down mouse while hovering hoverable objects causing weird animation bug.
(*) Fixed hover select/return confusion.
(*) Fixed importing of new songs causing a full reprocess of the Songs folder.
(*) Fixed incorrect ranking (rating) text display for own maps.
(*) Fixed key binding behaviour on pause menu.
(*) Fixed keyboard navigation at song select.
(*) Fixed last-played date updating on watching a replay.
(*) Fixed loading maps in multiplayer.
(*) Fixed mods on /np showing incorrectly when spectating.
(*) Fixed mouse clicking outside of masked spritemanagers.
(*) Fixed multiple active highlights at song select when using keyboard selection.
(*) Fixed notifications fading too slowly.
(*) Fixed one crash problem with video playback.
(*) Fixed options text appearing in wrong tab.
(*) Fixed pasing/failing layers not updating when only sliders are present.
(*) Fixed possible socket-related crash on closing connections.
(*) Fixed replay/spectating not playing back at full speed.
(*) Fixed results screen dialog sticking when retrying in a rare scenario.
(*) Fixed scoreboard showing incorrect mode's scores in some cases (such as spectating).
(*) Fixed selection not remaining after returning from gameplay to song select (in any mode but Show All).
(*) Fixed some issues with replay animation timing.
(*) Fixed some music stream issues (looping, not playing etc.)
(*) Fixed song selection acting weirdly.
(*) Fixed song selection bug when using tablet/touchscreen.
(*) Fixed song selection categories not being selectable.
(*) Fixed song selection sort changing taking longer than expected.
(*) Fixed sort by date (won't work at first unless you delete your osu!.db).
(*) Fixed spectator causing crash.
(*) Fixed spinner-clear not appearing correctly.
(*) Fixed spinners disappearing during replay playback.
(*) Fixed storyboard editor sprite import dialog.
(*) Fixed tablet support (restored to previously working state).
(*) Fixed taiko rankings not being displayed on song select.
(*) Fixed test mode score calculation.
(*) Fixed timeline not resizing correctly.
(*) Force reprocessing of song headers to retrieve missing dates.
(*) Further database optimisations.
(*) Handle file write errors without hard-crashing osu!.
(*) Huge database optimisations. Server lived through peak hours without any load issues.
(*) Improved Bancho stability (still not perfect).
(*) Improved handling of song select when using an absolute pointing device.
(*) Improved taiko drumroll limiting algorithm.
(*) Increased hits required for taiko spinners slightly (~15%).
(*) More database optimisations.
(*) Optimisation of accuracy calcuation.
(*) Removed face from taiko hit area.
(*) Split 'Hover Select' into two options (added Hover Return).
(*) Taiko drumrolls must be hit in time with the BPM (1/4-1/16 depending on bpm).
(*) Taiko sliders don't create flying notes when not in time with bpm.
(*) Web: Accuracy display on per-beatmap scoreboards are always to 2D.P.
(*) Web: Automatic subscription expiry with email notice.
(*) Web: Database optimisations.
(*) Web: Google custom search now feels more like you are still in the osu! website.
(*) Web: Kudosu changes (see news post).
(*) Web: when updating a beatmap, only one entry is added to the events list for that user.
(*) osz2 conversion stores the files to correct folder.
.Known problems: (do not report these)
Frame limiter turned off may be slightly more laggy than before under very specific circumstances.
Per-beatmap custom cursor sprites are still not used.
Scoreboard colours are still too bright.
Pause menu arrows look a bit strange.
2009-06-28 (b695)
Interface:
(+) Added Song Selection translations for German, Spanish, Portuguese, Polish, Indonesian and Italian.
(+) Added support for downloading translations from options menu. Automatic updates via osume.
(*) Split behaviour of "hover select" to two options - select and return.
Editor:
(+) Added kiai alert to editor.
(*) Many bug fixes.
Gameplay:
(+) Taiko beats animate after 50 combo.
(*) Taiko drumrolls must be hit in time with the BPM.
(*) More stable video playback.
Misc:
(+) Touchscreen support (internal).
(*) Changed skinning engine's handling of animations to give correct priority to beatmaps over skins.
(*) The usual insane number of bug fixes.
(*) Fixed tablet support.
Full changelog:
(+) Added Song Selection translations for German, Spanish, Portuguese, Polish, Indonesian and Italian.
(+) Added a 'hold' parameter for in-game metadata display (sets how long the text line should appear for).
(+) Added a shockwave showing where cursor is clicked when touchscreen is enabled.
(+) Added arcade-specific options tab.
(+) Added bancho command for checking for multi-accounters.
(+) Added custom touchscreen support.
(+) Added kiai alert to editor.
(+) Added localization framework.
(+) Added support for downloading translations from options menu. Automatic updates via osume.
(+) Added support in editor for advanced rotation of objects by arbritrary angle.
(+) Music control on main menu now has a toggle for permanent display of song info.
(+) Taiko beats animate after 50 combo.
(+) Web: Added support for gifting subscriptions to other users.
(+) Web: Country flag in profiles is clickable.
(*) Added error handling to video decoding process. video-debug.txt is created when an error occurs, but osu! will not crash (hi strager).
(*) Automatic scrolling at song select only takes effect when mouse is inside the window (and an absolute pointing device is not in use).
(*) BSS submission pops any bubbles.
(*) Bancho fixes (stable for ]1day and counting).
(*) Bancho thread deadlock fixes (should be 100% stable now).
(*) Changed behaviour of hover selection to include the "snapping to current" behaviour.
(*) Changed skinning engine's handling of animations to give correct priority to beatmaps over skins.
(*) Dialogs are allowed to appear even during play time if extended chat is visible.
(*) Fix for ghost quits from IRC clients.
(*) Fix for sliders playing at the wrong speed (0.5x or 2x) unexpectedly.
(*) Fixed !where having no output when the user cannot be located.
(*) Fixed !where not showing city even when user allows it.
(*) Fixed "Start Chat" button adding underscores to player name in tab.
(*) Fixed 3/4 timing not being recognised correctly for main menu flash effects.
(*) Fixed Autopilot not appearing on /np output.
(*) Fixed Bancho/osu! rank overflow.
(*) Fixed File ] Open in editor not updating control points (timing sections).
(*) Fixed SBE handling of subfolders.
(*) Fixed Song Setup dialog changes not triggering a save prompt on testing.
(*) Fixed animation problems when osu! has been running for over ~150 hours.
(*) Fixed audio not loading for the current song when importing a new file.
(*) Fixed audio playing at slower speed when exiting play mode during fail sound.
(*) Fixed autoplay/autopilot not playing sliders/spinners at full speed.
(*) Fixed beatmap not saving correctly on first save.
(*) Fixed certain position in screen causing seek during gameplay.
(*) Fixed click priority on song select.
(*) Fixed clicks leaking through from extended chat to the editor.
(*) Fixed codecs error appearing when video file does not exist.
(*) Fixed cursor depth when dialogs are displayed during gameplay.
(*) Fixed cursor disappearing in some cases where custom skinning (per-beatmap) is used.
(*) Fixed distance spacing not saving to .osu files correctly in all cases.
(*) Fixed editor not changing distance spacing multiplier when opening another difficulty.
(*) Fixed editor widescreen incorrect offsets.
(*) Fixed hitting escape in multiplayer song select (as host) not resetting to previously selected map.
(*) Fixed holding down mouse while hovering hoverable objects causing weird animation bug.
(*) Fixed hover select/return confusion.
(*) Fixed importing of new songs causing a full reprocess of the Songs folder.
(*) Fixed incorrect ranking (rating) text display for own maps.
(*) Fixed key binding behaviour on pause menu.
(*) Fixed keyboard navigation at song select.
(*) Fixed last-played date updating on watching a replay.
(*) Fixed loading maps in multiplayer.
(*) Fixed mods on /np showing incorrectly when spectating.
(*) Fixed mouse clicking outside of masked spritemanagers.
(*) Fixed multiple active highlights at song select when using keyboard selection.
(*) Fixed notifications fading too slowly.
(*) Fixed one crash problem with video playback.
(*) Fixed options text appearing in wrong tab.
(*) Fixed pasing/failing layers not updating when only sliders are present.
(*) Fixed possible socket-related crash on closing connections.
(*) Fixed replay/spectating not playing back at full speed.
(*) Fixed results screen dialog sticking when retrying in a rare scenario.
(*) Fixed scoreboard showing incorrect mode's scores in some cases (such as spectating).
(*) Fixed selection not remaining after returning from gameplay to song select (in any mode but Show All).
(*) Fixed some issues with replay animation timing.
(*) Fixed some music stream issues (looping, not playing etc.)
(*) Fixed song selection acting weirdly.
(*) Fixed song selection bug when using tablet/touchscreen.
(*) Fixed song selection categories not being selectable.
(*) Fixed song selection sort changing taking longer than expected.
(*) Fixed sort by date (won't work at first unless you delete your osu!.db).
(*) Fixed spectator causing crash.
(*) Fixed spinner-clear not appearing correctly.
(*) Fixed spinners disappearing during replay playback.
(*) Fixed storyboard editor sprite import dialog.
(*) Fixed tablet support (restored to previously working state).
(*) Fixed taiko rankings not being displayed on song select.
(*) Fixed test mode score calculation.
(*) Fixed timeline not resizing correctly.
(*) Force reprocessing of song headers to retrieve missing dates.
(*) Further database optimisations.
(*) Handle file write errors without hard-crashing osu!.
(*) Huge database optimisations. Server lived through peak hours without any load issues
.(*) Improved Bancho stability (still not perfect).
(*) Improved handling of song select when using an absolute pointing device.
(*) Improved taiko drumroll limiting algorithm.
(*) Increased hits required for taiko spinners slightly (~15%).
(*) More database optimisations.
(*) Optimisation of accuracy calcuation.
(*) Removed face from taiko hit area.
(*) Split 'Hover Select' into two options (added Hover Return).
(*) Taiko drumrolls must be hit in time with the BPM (1/4-1/16 depending on bpm).
(*) Taiko sliders don't create flying notes when not in time with bpm.
(*) Web: Accuracy display on per-beatmap scoreboards are always to 2D.P.
(*) Web: Automatic subscription expiry with email notice.
(*) Web: Database optimisations.
(*) Web: Google custom search now feels more like you are still in the osu! website.
(*) Web: Kudosu changes (see news post).
(*) Web: when updating a beatmap, only one entry is added to the events list for that user.
(*) osz2 conversion stores the files to correct folder.
.
Just saying though. <3