Charles Nutter reports that he and JRuby co-developer Thomas Enebo are becoming employees of Sun Microsystems later this month. JRuby is a pure Java implementation of the Ruby interpreter and Nutter reports that Java are backing a "Ruby-on-JVM" strategy:
The potential for Ruby on the JVM has not escaped notice at Sun, and so we'll be focusing on making JRuby as complete, performant, and solid as possible. [..] I'm also making it a personal priority to continue growing the JRuby community, foster greater cooperation between the Java and Ruby worlds, and work toward a "whole-platform" Ruby-on-JVM strategy for Sun.
Nutter also reports that JRuby will remain open-source, despite being under Sun's custodianship, although Sun is rapidly becoming a proponent of open-source software with Sun's process of open-sourcing Java itself.
InfoQ has also just released a video / slide presentation of Nutter and Enebo demonstrating and showing off the power of JRuby.