Last night, the IronRuby team made the source code for IronRuby available. John Lam posted the story on his blog (http://www.iunknown.com/2007/07/a-first-look-at.html).
Jason Zander wrote about IronRuby and the Microsoft Permissive License it shipped under (http://blogs.msdn.com/jasonz/archive/2007/07/23/ironruby-source-available-for-download.aspx).
Then Scott Guthrie ("ScottGu") wrote about it.Unlike my post here, his has a WPF sample (http://weblogs.asp.net/scottgu/archive/2007/07/23/first-look-at-ironruby.aspx).
I haven't finished--and probably won't finish--surveying the blogosphere, but there are probably tons of posts about it now. These are the posts I know of...