Engadget reviewed the Apple TV and got some more details on Apple's new service (better HD quality than Amazon – nice!). "Unfortunately, AirPlay is only available right now for audio, and won't have its full implementation in place until November. Apple did demo the video pushing feature for us using an iPad, and the system worked flawlessly, save for a tiny lag in between sending the video and it popping up on the Apple TV.
There're some lingering questions we have, however. For instance, we were told that while you can multitask on a device you're pushing content from, you can't put it to sleep, even if it's docked or charging. That means the screen will dim, but not shut off entirely, which seems like a weird choice. Hopefully the company will add some kind of charging awareness that allows you to pick some content, dock the device, and sleep the screen."