I've been watching a bunch of blogs about the Mix event by Microsoft ( couple of local blogs http://www.syringe.net.nz/ and http://turtle.net.nz/blog/ ).
There's tons of stuff being announced that just cool.
Extensions to the CLR for Dynamic languages, IronRuby, Silverlight, Expression....and more!
This stuff is all great, and pretty much what I've been expecting from MS, though I didnt know the Dynamic Language stuff was so close! The other cool thing in Microsoft is F# but there are no major announcment around this, but I think its an important development.
Anyways, all up, it means anyone developing on a .NET platform is going to have some really awesome tools!!
Well done Microsoft.