If you are a fan of Ubuntu Dapper, then you are going to simply love Edgy. Ubuntu, now featuring Beryl!

Tonight I upgraded to Ubuntu Edgy and installed Beryl.
Sounds interesting. You mentioned Ubuntu, what is that?
Ubuntu is a free, open source Linux-based operating system that starts with the breadth of Debian and adds regular releases (every six months), a clear focus on the user and usability (it should “Just Work”, TM) and a commitment to security updates with 18 months of support for every release (and with 6.06 LTS you get 3 years on the desktop and 5 on the server!). Ubuntu ships with the latest GNOME release as well as a selection of server and desktop software that makes for a comfortable desktop experience off a single installation CD. …. Source: macewan.org