Stone Drakes I rendered before, way back when they went in (Like 10 builds ago; edit: It was May 30th when I first posted these :s). Boubouille has an image of the non-mount (+ probably wrong color) stone drake shown here. The actual Volcanic Stone Drake will obviously be a mounted model, and probably the red or yellow version.
Cauldrons are boring.
PowerAuras-esque icons are mostly new, some function in the beta, most do not.
Skywall Drakes are probably mostly new to people. Boub says that Red is the East Wind drake.
There's a few other notes here, but mostly I'm just picking up stuff that isn't getting put up on this site, so there's not a ton to do.