Well if you haven't seen this yet this is the interview that gave me the most info and pretty much settles it
http://forums.cdprojektred.com/thre...-Adam-Badowski-translation?highlight=badowski
These are the key points/answers directly from that interview
1. On PC we could raise the resolution as the hardware is stronger but we wouldn’t be able to do something new at the same time, like for example re-writing the whole rendering engine that would be able to display that amount of polygons.
2. Platform unification exists – we have one build that gets distributed on each of them. The game is exactly the same, grass drawing distance is identical everywhere. The differences result from GPU having different parameters on each console for example, which could effect in differences in colour temperature.
3. And how will the PC ultra compare to consoles?
You will be able to find some small differences like Nvidia Hairworks for example but they are very demanding graphically so you must have a strong machine.
4. Are all models and textures the same?
Yes, there’s only one version, without it we wouldn’t be able to deliver the game on time. We would have to strip it down, build and test separately on all 3 platforms which is infeasible. To we do it all on one foundation and then distribute it to all devices.
One build for all which is why the recent trailers don't look the same as the initial one. That is the decision they made and nothing will change that so you better hope modders take an interest if you are not pleased though that heavily depends on how easy the redkit tools are to work with..