ASP.NET AJAX Preview 5 is now released at CodePlex:
http://aspnet.codeplex.com/Release/ProjectReleases.aspx?ReleaseId=32770
This new version of ASP.NET AJAX contains bug fixes and feature enhancements including:
* Dynamic and recursive templates
* Binding Converters
* Compatibility with the UpdatePanel
The download includes a Visual Studio project that contains sample code that demonstrates many of the features of ASP.NET AJAX Preview 5. For example, the project includes sample code for creating master/detail forms with the client DataView control and client templates, sample code for creating recursive templates, and sample code for creating pages that use JSONP. The download also includes the client reference documentation.
Enjoy!