Yeah but you still have to clear normal Nef to be able to attempt heroic Magmaw. >.>
My raid group is currently 10/12. I have yet to kill Cho'gall on either of my 85's, but my raid group managed it on a night I wasn't there after doing a lot of toon swapping. At least four of our raiders have mains in one of the more progressed raid groups that raids 3 or 4 nights a week.
I think Popina is 9/12 with an Al'akir kill but not the previous boss. Some people were locked to it and only had Al available so we had to skip them.
Willow is 9/12 with everything down minus the three end bosses.
Our farthest progressed raid group is at 9/13H, and got us the Horde first heroic Council kill on our server. They're uber leet.