Download here. 

Feature List and a little more detail here

I'm currently on Gutsy Gibbon (7.10), the previous version.  I'm upgrading after I post this.  I'll update this post afterwards.

Also, for all you hesitant Linux users out there, on this version of distribution you can get the iso, create a CD and put in your windows box and install Ubuntu like a Windows application.  This tool is called Wubi.  This will let you see what Linux has to offer. 

Also, if you haven't, go check out Virtual Box, so if you decide to make the switch, you can still have your Windows fix for pleasure or development in a nice VM.