We'd been disappointed to find that iOS 4.2 only brought AirPlay video support to built-in Apple apps on the iPhone and iPad, but it looks like that's changing soon -- Apple just posted up the first iOS 4.3 beta, which allows devs to send video from apps or websites to an Apple TV. There's also a new beta of the Apple TV software for testing it out -- it doesn't have any version notes, so we don't know if it offers any additional features as well. One thing we're not seeing explicitly listed is any mention of
