While this falls more under the Java umbrella, today's release of Ubuntu Feisty Fawn (7.04)
makes it easier than ever for Linux desktop users and server administrators to benefit from the realm of Java possibilities. Using Ubuntu's Multiverse with apt-get, Feisty Fawn users can now install Sun's GlassFish, Java SE (JDK 6), Java DB 10.2, and NetBeans 5.5. Canonical has been in relations with Sun Microsystems for almost a year now, but up until today this level of integration wasn't found in Dapper Drake or Edgy Eft. From the perspective of running Ubuntu on a few machines and being a Java developer, this is certainly a nice move to see. Linux Planet
has some additional information along with comments from Ian Murdock.