Well they did bring the MGS HD Collection (MGS2 & 3) to the Vita but the announcements @ the 25th anniversary are most likely gonna be about the Fox engine & possibly MGS5 but I do hope @ sum point Kojima Productions will make a MGS game specifically 4 the Vita
Honestly, I'd rather PW be updated for the Vita where it supports co-op over the internet rather that needing Ad hoc party or have a friend nearby. PW looks great on the Vita. I'd say a year from now, a revealing of a new MGS for the Vita would be good, but not at the moment, since PW is still doing great.
Is Sony still in the process of adding PSP games to play on the Vita???? I have been waiting very patiently for Metal Gear Solid Peace Walker and Portable Ops but they are still not there! Please Sony! Add Metal Gear!!!