Beta 2 seems to run great in the few hours I tested it. I have a small thought on the on/off/dimmer popup UI. I would love for it to automatically close/go away when the on or off buttons are pushed. When a light is being dimmed, I think it's great that the popup UI stays up, as I may not get the desired level on the first try. But for on and off, I'd love to save myself the additional step of closing the popup.
Dan