Our source, a Giz reader, had some feedback to add to the prototype, which he used for a day: Even in early form, it's light and fast, much faster than the desktop emulator at times. And as a longtime programmer, he thinks it's a lot more put together than Window Mobile 5 on the back side of things. It's a prototype, so things will obviously change, but these are all great signs. I just pray that hardware by other makers is a lot more adventurous. In my mind, those HTC designs remind me a little too much of WM and will for a long time.