The ASP.NET team recently released the ASP.NET Roadmap document on the codeplex site.  I love their goal of making ASP.NET Ajax the first-class choice for all Web 2.o developers ( Show us the love!!!).  They are planning on enhancing the DOM API's and planning to enable great mobile Ajax applications. 

Some of the other goals are to make client-centric Ajax development and UI experiences easy by providing or enhancing the following:

• Client Data and UI Templates
• Client Data Sources
• Client Data and Server Data
• Accessibility
• Animation
• Drag and Drop
• Client-side Controls and Behavior
• Interoperability

They also plan on providing great tools experiences for AJax development:

• Reduced update lag for Javascript Intellisense
• Javascript Intellisense support for a broader range of coding styles
• Recognizing XML Metadata Comments in the Active Document
• Recognizing OpenAjax-compliant Metadata Files
• JavaScript Navigation Tools
• JavaScript Build Tools
• etc...

Looking forward to these new enhancements.  You can download the document here.