Several snippets are doing the rounds right now that suggests a few corkers are headed the PS Vita's way. Someone dug up a CV on LinkedIn that suggests Sony will bring All Stars Battle Royale to the Vita. That always seemed a bit of a no-brainer and it was odd of Sony to think everyone wouldn't leap to that conclusion, if it was holding the title back for the Vita's E3 show reel.
A rambling list from an alleged Ubisoft staffer also suggests that Assassin's Creed 3 could be making its way to the Vita. The whole post sounds like a drunken rant, so that one with a pinch of salt.
Next up is word that Castlevania: Lords of Shadow might also be headed to the Vita via Konami, although that's the vaguest use of the word "rumour" going on in the source article. Finally, it looks like the invites for the LittleBigPlanet Vita beta are going out, so keep an eye on your in-boxes.