Well, this is going to be a new framework to Rapid Application Development with AJAX using ASP.NET as back end technology and JavaScript/HTML/XML on the client side, the strong points are going to be:

• Multi-platform (mono compatibility is a must for this)
• State management.
• Server side development exclusively (No JavaScript or HTML).
• Event driven development.
  
• Common browsers support (IE, FF, Safari, Opera, etc.).
• Wide widget set (windows, buttons, combos, etc.) based on QooxDoo.
• WebServices access.
• Data Access and possibly Databinding.
  

And more are coming with time.

I'm doing tests with the very first implementation, i gonna say here how development goes.