Here's a video of CM7 (Gingerbread) running on the Tab:
http://www.youtube.com/watch?v=Zzwgvzpev2Q

It's early work but it looks GREAT! One benefit mentioned at the end of the video is that the battery life is much improved over the stock ROM -- it seems as if gingerbread battery optimizations are paying off!

I'm also surprised at how many things are already working very well! Surfing appears to be nigh flawless.

I'm looking forward to the CM8 port (my assumed name for Honeycomb port).

Install at your own risk, but even if you do not, this is well work keeping a 'tab' on (ba-dum cha).