According to http://www.facebook.com/note.php?note_id=328795820483403 (which is the official Samsung channel) ICS should be on the following tablet devices now: GALAXY Tab 10.1, GALAXY Tab 8.9, GALAXY Tab 7.7 and GALAXY Tab 7.0 Plus.
That's from December 2011, but sometimes there oddities in the rollout, especially with regional variants.
I thought so too. Some are. Shockingly enough, I believe the Samsung tabs they gave out last year at I/O are still on 3.x. Tried to update my coworker's before heading to I/O with it and ended up with a newer version of Honeycomb. :/