Ubuntu 9.10 Karmic Koala alpha is ready for download
Canonical, of course, does not recommend running any alpha software on production machines. To play it safe, install the OS in a virtual machine or on some scrap metal you have lying around. Intrepid types, however, are welcome to boot the ISO and install away.
Torrent downloads for 9.10 area available for x86 alternative and amd64 (and as direct downloads), while you can download Xubuntu and Kubuntu from their respective pages.
The torrents are well seeded and downloading quickly, so fire up your client and go get Karmic now!
Update: will try to have some screenshots up soon. So far, Karmic is incredibly zippy. Well done, Ubuntu devs!
Update: screenshots after the break...