This is just an quick heads-up. Sure, Android 4.0.x and 4.1.x were available for quite some time via CM9 and CM10, but for the official one Galaxy Tab 10.1 users needed to wait really long time. Now, you can go and grab ICS 4.0.4 from SamMobile for example. Few things worth noting:
- CWM 126.96.36.199 by Pershoot is working without any issues (older ones from 5 series should work too).
- Rooting is easy as always, though you will need to install both packages for ARM CPU from this site (in CWM, of course): http://androidsu.com/superuser/
- Reverting from 4.1.x (CM10) to official ICS is not an issue, as long as you make factory reset.
- Basically 4.0.x line is much faster, smoother and more responsive than HB 3.2.