http://blogs.sega.com/2014/03/25/hatsun ... n-release/
Apparently the first Project Diva F sold really well, so Sega has decided to bring us the second game
And they're releasing it physically for both systems this time around, unlike the last game (which released digital-only on Vita in NA, and on both systems in EU).
Personally, I double-dipped on the first game (imported for Vita, and localized retail copy for PS3), and there's no doubt that I'm going to be picking this up.
I really hope that this is is a sign that Project Mirai is coming stateside too. Excited!