Ubuntu 8.04 - Hardy Heron has just been announced on the Ubuntu-devel-announce list. Not only will the Ubuntu community continue to do what it does best, produce an easy-to-use, reliable, free software platform, but this release will be an Long Term Support version with updates available until 5 years after the release date.
http://lists.ubuntu.com/archives/ubuntu-devel-announce/2007-August/000336.html