ASP.NET AJAX 4.0 Preview 5 available on CodePlex

Microsoft has released ASP.NET AJAX 4.0 Preview 5 on CodePlex
From the site:

ASP.NET AJAX is a pure client-side JavaScript library that enables you to build Ajax applications that work with all modern web browsers. By taking advantage of ASP.NET AJAX client controls and templates, you can build database-driven web applications that execute entirely in the browser.

ASP.NET AJAX supports the following features:
Client templates that can be used to format database data in the browser
Client controls such as the DataView control
Client DataContext component that supports change tracking and identity management
ADO.NET Data Services support
WCF and ASMX Web service support
JSONP support
Observable pattern for plain JavaScript objects
Live Bindings
Command Bubbling
Support for managing complex links and associations between entities from multiple entity sets or tables


In this release, they have added support for the following features:
Dynamic and recursive templates
Binding Converters
Compatibility with the ASP.NET UpdatePanel

More info including the download link is available on CodePlex: http://aspnet.codeplex.com/Release/ProjectReleases.aspx?ReleaseId=32770