Are you sure they are not Xbox 360 shots ... ?
eek! I hope not. :)
Actually it's quite possible for Morrowind IV (didn't Morrowind III have a PC/Xbox port going on?) For NWN 2 though, I'm "pretty sure" that it is going to be an PC exclusive title. There's just so much going on in a role-playing game of that magnitude that it seems hard to imagine using a console controller to manipulate it all smoothly and intuitively. But - if i'm mistaken, it would be great if anyone could post updated info here.
Here's another NWN 2 pic with widescreen feel:
I've notice more and more screenshots taking on this look. Perhaps due in no small part (as paddy pointed out) to the growing proliferation of xbox 360 titles.
And on a cool side note - I recently downloaded the demo of NWN 1, and was totally impressed with the way it handled widescreen. No tweaking for my native 1920x1200, expanded horizontal FOV with no loss of the vertical, more room for menu bars and inventory and to top it all off, a text option for high resolutions that increased the size of the text, making it sooo much easier to read (has anyone else thought of this? I though it was brilliant). I really have to hand it to Bioware - they truly made an outstanding widescreen-friendly RPG.