Are there any frameworks available to help speedup ASP.Net development with AJAX?
Atlas for ASP.NET is the implementation of AJAX technology introduced by Microsoft ( http://atlas.asp.net/). I have used it for a production-ready project, and it has proven to be quite effective and easy to implement. I can only speculate, but I imagine that over time AJAX functionality will be brought into ASP.NET and will be accessible seamlessly, without the need for a separate framework.