From PlayStation Blog,
"Today we’re confirming that the critically acclaimed PlayStation Portable version of Metal Gear Solid: Peace Walker will be available on PS Vita as a PlayStation Store download later today!
Step into the shoes of the legendary Big Boss and infiltrate the lush forests of Costa Rica, recruit soldiers and construct your own Mother Base as you lay the groundwork for your band of Militaires Sans Frontières (Soldiers Without Borders)."
"Or work together with other players in special, four-player CO-OPS (Cooperative-OPerationS), and six-player competitive matches using the PS Vita’s Ad Hoc capabilities in this title originally released for the PSP in April 2010. (Note: Transfarring functionality not available in this version of the game.)"
No details on whether its fully featured with trophy support. It seems as though it is just the PSP version of the game.
Tell us what you think about MGS: Peace Walker becoming available for the PlayStation Vita. Would you be bringing it to your Vita? Let us know in the comments below.