Sega opens a teaser site for a PS3/Vita game (Update 5: lol soccer game)

[Nem]

It does have a valkyria hint to it.

Most probably valkyria 4. They have probably learned their lesson and arent limiting it to the PSP like in the past. Wish they would localise VC3 aswell though. Its a bit annoying to be forced to skip part of the story.