The Ubuntu team is proud to announce the beta release of Ubuntu 7.10 and its
variants, Kubuntu, Edubuntu and Xubuntu. Codenamed "Gutsy Gibbon", 7.10
continues Ubuntu's proud tradition of integrating the latest and greatest
open source technologies into a high-quality, easy-to-use Linux
distribution.

Ubuntu 7.10 on the desktop features a cutting-edge graphical experience with
composited desktop effects, fully automated printer installation, and
superior support for Firefox browser plugins.

Ubuntu 7.10 server edition brings enhanced security-in-depth with AppArmor
and easy install-time options for multiple common server configurations.

Click source link for full release notes.