Yeah I think I'll buy the next Crysis game cause I love the first and the second game and I now that Crytek care about their customers, even the PC-Gamer or why they made the free DX11 and HighRes Packs?
You want to know the truth about the pack DX11, look this, it is in french but you can easily translate: http://www.hardware.fr/articles/838-1/crysis-2-dx11-performances-tessellation-loupe.html
Just a portion of section:
For Nvidia this collaboration helps to justify the power of the latest GPUs, but also to influence how to use the tessellation, a rendering technique treated more effectively than by the GeForce Radeon AMD. For Crytek, the DirectX 11 update is timely to try to boost sales very disappointing PC Crysis 2. The developer's own admission, somewhat neglecting the PC version was a strategic error ...
If we can assume that a financial aspect was also negotiated by Crytek, EA and Nvidia, neither party will comment on that account. Whether it's a big check, from sports bags full of greenbacks, developers made ??available, marketing support or a mixture of all this, it seems clear that Nvidia had a hand in the portfolio one way or another, probably with demands defined in terms of the use of tessellation which was clearly not part of the initial plans of Crytek. It also stipulates that the party took longer to be implemented.