Ubuntu 8.04 "Hardy Heron" Alpha 5 is now available for download. This is the first Ubuntu alpha release since the 8.04 feature freeze, and now planning is also underway for Ubuntu 8.10 Intrepid Ibex
. The complete list of features (and download links) can be found on the Ubuntu Wiki
. Likewise, the release announcement can be read on ubuntu-devel-announce
. There is one more Ubuntu 8.04 LTS Alpha release planned before the beta/RC and then the final release in April.