exactly what has EA pumped into it?
Absolutely every single press coverage and video of Crysis 2 has been focused on the Xbox360, including the only beta test to date.

To my knowledge the 3 previews that were written up prior to christmas, only one mentioned what platform build they were playing. It was IGN and they previewed the PC version.
http://xbox360.ign.com/articles/114/1140822p1.html
Gamespot and Kotaku didn't state what platform build they were playing.