According to their twitter page, it seems like Hotline Miami might hit Vita by the end of May.
Hotline Miami is a 2D top-down action video game by Dennaton Games, in which the player wakes up in his apartment and listens to cryptic messages on his answering machine. These messages tell him to perform an arbitrary task at a certain location, which in each case is inferred as a metaphor for killing every person at that location. The player has access to a wide variety of melee, thrown, and ranged weapons, and will need to handle challenges through either stealthy tactics or overwhelming force.
An interesting game idea, we will let you know if we get a solid release date.