was released nearly a year ago with Ubuntu 8.04.1
arriving a few months later. Now this afternoon as part of Canonical's commitment to offering Long-Term Support to the Hardy Heron
we have Ubuntu 8.04.2 LTS.
Found in Ubuntu 8.04.2 LTS are over 200 security fixes and other bug updates The Ubuntu 8.04.2 LTS release announcement can be read on the Ubuntu mailing list