"Specifically, Scott Guthrie, general manager in Microsoft’s Server and Tools division, announced IronRuby, a version of the Ruby language for .Net. Over the past few years, Microsoft has hired experts in dynamic languages, including Python and JavaScript, to expand support for these languages. Like IronPython—the version of Python for .Net—the source code for IronRuby will be available with an open source-style license, Guthrie said."

Microsoft takes Silverlight beyond Windows | CNET News.com