Well that's not actually what it says either. Rather that Jimmy is leaving and he was one of the last on the IronRuby team, which Microsoft may now decide to stop funding.
Personally I've always seen Ruby as a bit of a fad and one whose day seems to have passed, I suspect there are better areas to focus development on.
Like what? Another rewrite of WF?
I'm just finding it ironic that .NET which seems to have billed as a "multi-language runtime" keeps losing languages. While the JVM (never ment for anything but Java) seems to be where all the language development action is these days. Good work Microsoft. Keep killing your development story.
I'm sure everyone in the world will drink the Kool-Aid and use C#.