A maintenance update should be pushed to the Samsung Galaxy Tab 10.1 [WiFi Only] soon, and aims to fix a few common issues. No, this may not be the Android 4.0 (Ice Cream Sandwich) update you've been praying about, but it still mends some important problems. First off, it should fix rotation issues. Slow rotation on either a tablet or smartphone can get real irritating, so hopefully this speeds things up.
The fixes tend to email attachment issues, improve WiFi reconnection response, and other system file force closes. It should also improve battery life. This improvement could be directly related to previous WiFi reconnection problems, as constantly reconnecting to a network burns your battery faster than normal.
And finally, it installs the latest version of the Android Market. It's odd Google hasn't initiated an easier way to upgrade the Android Market; sure you could download the .apk file of the latest and greatest - but many only trust a more "official" approach. I'm sure the Market is one application we wouldn't mind Android automatically upgrading.