Well it’s been some time since we first saw the CyanogenMod team go to work on CM9 and since then we’ve seen a bunch of devices get alpha or pre-alpha builds of the ICS ROM. Given that it’s pre-alpha it’s design is strictly for previewing only. However the only aspect that appears to not be working is the camera. We’ve seen the original Galaxy Tab get a CM9 build but now it’s available for rooted WiFi versions of the Galaxy Tab 10.1. Specifically it’s available for the GT-P7510 model and should NOT be flashed on other versions.
The Galaxy tablet will probably be upgraded to Android 4.0 by Samsung but there isn’t an exact time table as to when this will happen. It will also see a version with TouchWiz intact. So CM9 is a good choice for seeing a more pure ICS experience. So if you are wanting to flash this make sure to flash the recovery.img with fastboot first. Once that is done you can go ahead and flash the ROM in recovery mode.