I was looking at the screenshots that Blizz released from their new raid Grim Batol, and I really didn't see much new. In order of the screenshots (left to right) on the homepage of MMO-C I see...
1) Durn the Hungerer's Model
2) More models like Durn
3) More models like Durn
4) An orc in wotlk Tier 9 PvP gear
5) General Vexxaz's model
6) Bronze Drake and Twilight Drake Models (from CoT: Strath and OS3D 25m respectively)
7) No models in this pic, but it looks an awful like BRD
8) Well I guess this one's got some new stuff.
So, seven out of the eight screenshots seem to contained recycled models or ideas. I'm sure Blizz is working hard on Cata and hard on Grim Batol, but I feel like it will be Naxx all over again, and I'd like to see some new models and new, different raids along with new tiers of content.