Microsoft just released their new AJAX Libraries, so a new version of Simple CMS has now been released which uses it. I am watching for new controls especially in the AJAX Control Toolkit to add to Simple CMS in future versions. You can suggest changes for future versions of Simple CMS and also ask questions about it using the Simple CMS Forum. Let me know what you think.
I hope everyone is keeping up with all the cool features in the MS AJAX. I hope they have some awesome stuff when we get ASP.NET 3.0