Atlas has its first commercial control library. Component Art just went live with the new version of their excellent control library. All their controls now have a full client-side API built on top of the Microsoft AJAX Library. They all support UpdatePanel and persist their changes across synchronous and asynchronous postbacks. The library already has full online documentation and live samples. They are certainly setting the bar very high for other component developers. To think that they were able to do that even though we're not even in beta is just amazing and just show the level of excitement around the technology.
It is an amazing library. Check it out: