Yeah i'm expecting some games at TGS. Especially as it's confirmed that Capcom,Sega and Falcom have all 3 a unannonced launch games.
So from capcom it will probably be a monster hunter game,Sega i have no idea and Falcom is much likely to release a rpg.
And some breaking news is that FAMITSU(Japanse gaming mag) will be revaling 4 new games, Starting this Thursday and then one more game until we hit TGS. Doh one thing to note is that all 4 games can be japanse only games. But hopefully their will be some awesome JRPGs that releases here too.
http://www.thesixthaxis.com/2011/08/23/vita-followers-keep-an-eye-on-famitsu/