Pretty sure this is still coming to the Vita, although the focus seems to be on the big consoles for now. Here's a few more pics out of Comic Con courtest of Konami. There's also a new HD trailer.
Hideo Kojima was at the event, showing off the new Fox Engine that will power his future games behind closed doors. The engine is described as cross-platform so is likely to mean games developed for PS3, PS4 and future consoles can also be ported to the Vita.