This is big news — Sun, while in the midst of reducing its workforce, has hired JRuby developers Charles Nutter and Thomas Enebo. It appears that this was the doing of Tim Bray. They will be paid to bring JRuby to a 1.0 status. This is something I hadn’t expected and I think my jaw is laying on the floor! Anyway, you can read all about in Tim’s blog post.
UPDATE: You should also read Charles Nutter’s blog post on this. Besides his perspective on the deal, he is also maintaining a list of links to major news reports on this.