Mailing the story:

Microsoft has withdrawn from the development of IronPython and IronRuby and has handed over responsibility to the open source community. For many, the decision was hardly surprising: Shortly after leaving Microsoft early last August, the chief developer of IronPython, Jimmy Schementi, had already expressed his disappointment about his team having been reduced to half its size within a year. The developer said that this was the reason why the team needed so long to complete the Visual Studio support for IronPython. It was probably also the reason why IDE support was long unavailable in Visual Studio for IronRuby. A related prototype was only announced by Jason Zander, who was responsible for the implementation development of the two script languages, in a blog posting which also explains the changes affecting the two projects.