http://www.harmonixmusic.com/blog/rock- ... announced/
...It's coming. Xbox One and PS4. All of the hype.
They're focused on improving the core experience (Guitar, Bass, [Pro] Drums, Mic) rather than adding new features that barely anyone used/cared about (that means no Pro Guitar, no Keyboard, no new instruments, etc). They're bringing backwards compatibility with old DLC, and working aggressively to bring backwards compatibility with old RB controllers. More info to be announced later.
OH AND THEY HAVE A SONG REQUEST FORM
http://www.harmonixmusic.com/games/rock-band/request/
FOR THE LOVE OF HARUHI, EVERYONE REQUEST YOUR FAVOURITE J-ROCK SONGS
IF DU HAST CAN MAKE IT TO RB3, JAPANESE SONGS CAN MAKE IT TO RB4
or request english songs if that's not your thing
LET'S DO THIS