It's possible but I doubt it. I reckon any marketing deals with nVidia will amount to a 'way it's meant to be played' sticker on the box. If the game could take advantage of DX11 then we could see some DirectCompute physics in the game but again I don't believe the game will have any DX11 features.
If the game is optimised for multicore processors then it might be beneficial for a core to be dedicated to physics and leave the GPU to concentrate on the visuals. I still feel this game could push even high end cards at HD resolutions.
Also, don't expect any information from the mod team other than - wait & see