A new Unity has been pushed into the Unity team’s PPA and we need testers to help give it a run for it’s money before it is accepted into Precise. Nick has all the details of how to participate in the testing [right here](https://www.theorangenotebook.com/2012/01/unity-52-whats-new-and-call-for-testing.html). You will need to be running Precise to participate in the testing.
You can also find help if you get stuck in `#ubuntu-unity` on Freenode. Happy testing!
I am running it now and the multi-monitor improvements in Precise are so much better than they used to be.