and the full game will be out Summer of 09 for XBLA/PSN

Marvel Vs. Capcom 2 Revealed, Demo Exclusive to PSN!

http://www.tu4ar.com

Here are the details of the demo:

    * Two-player local matches
    * Six available characters – Ryu, Chun-Li, Strider, Spider-Man, Iron Man and Wolverine
    * Seven selectable environments
    * Upscaled 1080p graphics
    * Widescreen or 4:3 aspect ratio
    * Two graphic filter options for character sprites
    * And other cool options to check out