You can get to the last post in a thread by clicking on the little blue arrow icon under the name of the last responder, just to the right of the date. I was surprised to find that there's no text to click on to see the forum cateogries--you click on the little blue house at the top of the screen.
My general impression is that this new format wastes a lot of space and doesn't seem to improve operability. If "VERAULT" makes a post, that's all the information I need at that point--I don't need to see when he joined, or how many posts he's made or his facebook or twitter link--if any exists. No sense in promoting these players; they're big enough already.
I confess that I'm inclined to prefer text-only forum software more, such as Vanilla.