Just put up on MMO-Champions Youtube page, the Fire Hawk mounts in action...well, standing ground action at least.
Edit: Here's the new MMO-Champion page featuring the new non-combat pets and mounts for 4.1.
The Fire Crimson Hawk is pretty awesome looking imo, while the Beryl Fire Hawk may take a bit of getting used to. The Beryl is neat, don't get me wrong, it's just very...different. Can't decide if I'm 100% in love with these models being shared with the proto-drakes, but the skins are just too fantastic to pass up. Well done Blizzard design team, well done indeed.
"This is a short preview of the Fire Hawk mounts introduced in patch 4.1, so far we don't have any information on the drop location." ~MMO-Champion video text
Hopefully we'll get some information on how to obtain these guys soon.