I`ve founded out that there are 3 "Crysis 2" editions:
-Crysis 2 (normal)includes dx9
-Crysis 2 (Limited Edition) includes dx10 (due to technical issues is still in progress)
-Crysis 2 (Nano Edition)is the most complete version that includes dx11 + Hero Nanosuit Figure + all the content of 2 upper editions.
The "Crysis 2 Nano Edition" is about to release soon, at the same time with DX10 patch for Limited Edtion.
As a proof of Cryengine 3 that`s running DX11 here is the video: