My post is a little late in coming, but I wanted to note that
MS AJAX was recently released. Thanks to Scott Guthrie and the entire ASP.Net team for getting this out. I am certain I will be writing much about AJAX in the near future. I see they are releasing the ASP.NET AJAX 1.0 as a library itself, and a seperate AJAX Control Toolkit download is available from CodePlex. The Control Toolkit is a "shared source collaborative project." My first thought is this seems like a good way to make a supported version of the core AJAX library available quickly, while providing the necessary controls that could not make it to the library this go round. Good work Scott and team!!