Atlas: Rough Cuts Version can be found here

In the past year, the Ajax combination of technologies (Asynchronous Javascript and XML) has been all the rage for creating rich web applications. Now, in an effort to simplify Ajax development, Microsoft has introduced a new framework, code-named "Atlas", that uses both Ajax and ASP.NET for building richer, more interactive, more personalized Web experiences that are cross-browser and standards-based.

Atlas Rough Cuts provides experienced web developers with an exciting hands-on tour of Atlas, beginning with an introduction to the technologies behind it all, including JavaScript, XMLHttpRequest, DHTML and related topics. Author Christian Wenz then shows readers how to create Ajax-style applications with the Atlas framework, including data binding and XML Web Services. The book imparts important fundamental knowledge in a concise reference-like way, making the concepts of this new framework accessible to developers of various technical levels.