June CTP of Atlas is out as of yesterday. Biggest change everyone is talking about is the ability to add UpdatePanels dynamically, something Nikhil Kothari explains a lot better than I ever could. Not sure I've wrapped my head around the whole “control must be in the same naming container as the UpdatePanel” concept for ControlEventTriggers. Will have to try it out.
I have mixed feelings about this update. I'm glad their improving but I'm having a hard time keeping up with the current Atlas implementation and I fear I'm going to fall even further behind people like Garbin. *$%^& hard trying to stay on the cutting edge.