Someone in the blogosphere (can't remember who) had recently said they would like to see Microsoft start working with open source projects, include it in their products and yet leave it unchanged and open source, all the while contributing back to the original project. Well, they're going to include JQuery in Visual Studio going forward as well as other products. It will have IntelliSense support, too! This is great news from Microsoft and hopefully the beginning of much more support for open source projects.
The announcement by Scott Guthrie is at http://weblogs.asp.net/scottgu/archive/2008/09/28/jquery-and-microsoft.aspx
Here's another announcement by a member of the jQuery team: http://jquery.com/blog/2008/09/28/jquery-microsoft-nokia/