So from what im reading the only thing nVidia is saying is that they will only provide 2 way sli profiles through their drivers instead of 2,3 and 4 way. Nowhere do i read that they are actively blocking 3 and 4 way sli which to me would mean that you could in theory set up your own 3/4 way profile through inspector no?
Actually NVidia won't even be providing 2 way SLI profiles as this can only be done with DX11 which will soon be history, DX12 will be up to the game devs.