Sorry sidsypker and Vigilance.492. I was reading an article on VGChartz regarding asian gamers and that was one of the links.
Link has been corrected.
Hahaha it was actually funny, and provided a less depressing response than what I would have actually said.
Which is that sadly we still just don't know. We haven't seen semi-volumetric clouds since the SoD Trailer, so it's a little up in the air at the moment.
Personally with lack of evidence either way I choose to believe they do still exist, but they are probably heavily tied to TOD, Weather and then have a dash of randomness anyway, and that's why they aren't in any of the Gameplay Demos. However some people have taken their absence in the demos to mean they've been cut, end of story.
Could be either really, just have to wait and see.