Developers at Sun Microsystems have released JRuby 0.9.1, which will serve as a predecessor to the planned 1.0 release of the programming language. JRuby is Java implementation of Ruby. Highlights of the 0.9.1 release include a 50- to 60-percent performance boost, a new interpreter design and refactoring improvments. Also featured are enhanced parser performance and a new syntax for including Java classes into R Developers at Sun Microsystems have released JRuby 0.9.1, which will serve as a predecessor to the planned 1.0 release of the programming language. JRuby is Java implementation of Ruby. Highlights of the 0.9.1 release include a 50- to 60-percent performance boost, a new interpreter design and refactoring improvments. Also featured are enhanced parser performance and a new syntax for including Java classes into Ruby.Sun has Charles Nutter and Thomas Enebo, the chief maintainers of JRuby, working on the project. They joined Sun as full-time employees five weeks ago. Technology Industry