Capcom has just announced that Marvel vs Capcom 2 will be coming to PSN and XBLA this summer!
Some quick points from the announcement:
1. The game is $15.00 on PSN/ XBLA
2. 4/30 demo on PSN
3. Game based on the Dreamcast version
4. all 56 characters unlocked
5. Same GGPO netcode being utilized by Super Street Fighter II Turbo HD Remix
6. Custom soundtracks available
7. 2 HD upscaling options; "crisp" or "smooth" and classic.