Cdesai, a CM device maintainer for the Galaxy Tab, has released a preview of their CM10 Android 4.1 Jelly Bean ROM. I have tried it and took the screenshot above. As for every preview ROM, it is not yet ready for daily use. I wanted to test it a little longer but, unfortunately, I needed WiFi tethering which wasn’t working properly in this. Until WiFi tethering works, I’m sticking to CM9.
Want to try it yourself? Head to cdesai’s CM10 for the Galaxy Tab thread in XDA. Like I said earlier, this is a preview and therefore it isn’t feature-complete. There’s bound to be several unsquashed bugs. Not recommended as a daily driver but it could work as such for some.