In a post on the MyCrysis forum, mod Cry-Tom announced:
We would like to announce that there will be a DX11 patch released for Crysis 2. We are working to get the best out of DX11, so we’ll wait to announce the features until a little closer to release.
Make up your mind, guys.
Regardless, hopefully the patch will do more than just add DX11 support. The game has a lot of other things wrong with it on PC, such as netcoding.