Will Sqaure Enix consider games from the final fantasy series that have been released on the Playstation Portable and past handhelds for the ps vita or plan to be tied to it at launch. Since games that have been realeased in the past for Playsation Portable could be more attracting to the western gamers like Final Fantasy VII Crisis Core (yet no digital distribution has been planned), Final Fantasy Dissidia (including 012), Final Fantasy Type-0.
Kingdom hearts Birth by sleep, maybe even Chain of memories, Coded and a port for the the first two titles of the series Kingdom Hearts 1 and 2. I know Kingdom hearts 3D may be a little less likely but could be a strong presence if presented for the ps vita.
God of War
Kratos the man who became a god and one of Sony's Poster boy's for gaming. Launched bundle should be considered, God of War: Chains of Olympus and Ghost of Sparta
Naruto Ultimate Ninja Heroes
The games form this series have been met with great reception and HAVE TO be considered for realese since their on UMD'S and we all know Sony better make good on their promise to make sure UMD will not go to waste
I haven't heard anything, but considering SE's relationship with Sony, I would easily expect a couple FF games, if not full on releases with the consoles, since it's powerful enough to do so.
Of course we will have Crisis Core: Final Fantasy didn't you know that is why they won't release the game digitally on PSP Go because they know when PS Vita comes out they can supposedly re-master the game and sell it for $40 brand new again!
It's quite likely, considering that every major system released since 2004 has had a new FF on it (if you count multiplats) as well as every Sony system ever.