My 8.9 got the update today. OTA failed (I think due to it being rooted) but worked fine through Kies. Must say, it's totally transformed the Tab for me, I enjoy using it again as it's so much quicker and more responsive. Far, far less slowdown than on 3.2, and web browsing is monumentally quicker; complex pages like Facebook load very quickly in both the default browser and Chrome).
Little bit annoyed with the massive amount of Samsung bloat that has appeared on it again, but it doesn't appear to be impacting performance too much. Still, I think I'll be tempted soon to factory reset it, root it again and get rid of them.