Personally I found this to be amazing news, because Microsoft is shipping an Open Source project, licensed under MIT License, with its flag ship developer tool, Visual Studio. Maybe if we play our cards right, we can start seeing other projects like NUnit and Moq start to ship with Visual Studio. I have my fingers crossed.
John Resig the developer of jQuery had this to say on his blog:
And according to Scott Guthrie, Microsoft is also extending the standard product support to jQuery:
We will also extend Microsoft product support to jQuery beginning later this year, which will enable developers and enterprises to call and open jQuery support cases 24x7 with Microsoft PSS.
This is probably some of the most exciting, because it means that jQuery will be a supported stack in some of the more rigid enterprise development environments that won't install anything that isn't supported by Microsoft. I also beleive this is great news for MVC, because jQuery makes MVC just that much more useful for the average developer.