Alright, I found those new screenshots I was looking for:
Some people at other forums thought the above screenshots were rendered, but here is what the lead designer of B.C. had to say:
"I took those screenshots, and they are all in-game. They look rendered because we are using some of the per-pixel effects that only a few other devs are using (id and Bungie for example). These are effects commonly used in renders. "