Apple's highly anticipated update for , , and the iPod touch finally arrived this morning, along with an update for Apple TV. PCMag got a sneak peak at the update, which enables AirPlaywireless streaming of video, photos, and music from your iOS device to Apple TVand AirPrint, Apple's wireless printing solution for the iPad. Also included in the update: better Word document fidelity (upon import and export) in iWork, and multi-tasking and Game Center are now on the iPad.

AirPlay is an exciting new development for iOS device owners who also have Apple TVs. As long as your device and your Apple TV are on the same wireless network, they will now automatically detect each other. If you want to display photos from your iPad on your television, just tap the AirPlay icon on the top control panel in the Photos section and select Apple TV. Within a couple seconds, your photo will appear on your televison and will remain displaying on your iPad, as well. If you finger swipe on the iPad to the next picture, the Apple TV will follow suit, making this a great manual slideshow tool. There is a very slight delay between the swipe on the iPad and the swipe on the television, but nothing serious enough to be annoying. Of course, you can also opt to use an automatic slideshow and set it to music, select screen dissolves and set the pace.

Music streaming is similarly simplethe Now Playing screen on your device has an AirPlay icon. Tap it, tap Apple TV, and within seconds the music will begin playing on your Apple TV. If you are already playing the track on your device, AirPlay will repeat a very short section of music when it switches over to Apple TV and skip a small section when switching back, due to a slight delay in the stream. Again, nothing that is likely to annoy, especially because the ease of enabling the streaming is so rewarding. You can also stream from an app, like Pandora, to Apple TV, and you can stream audio while multi-tasking.

You can multitask while streaming video to Apple TV as wellgreat if you want to check out IMDB while you're watching a movie to get details about the film. Unfortunately, video does not display and play on the iOS device when you stream to Apple TVthe screen turns into a simple remote control for video playback. This is useful, of course, but it would be nice to stream to Apple TV and, say, take your iPod into the kitchen and still be able to see the video. The reason for the exclusion, while photos do display on both the device and Apple TV, is likely due to the delay between the two devicesit would create an audio echo effect. Another minor annoyance: the remote control that appears only has Play/Pause, Skip Forward/Backward, and a video timeline you can scroll with, but no volume controls; and the physical volume controls on the iPad won't control the volume for Apple TV. This is particularly odd because the music Now Playing has a volume control that does adjust the Apple TV's volume during AirPlay streams.

Just to clarify: AirPlay is a one-way street. You cannot stream something you rented on Apple TV to your iOS device. Therefore, we recommend buying or renting your content on your iOS device whenever possible, so you can rent a TV show, start it on your iPod touch and finish it on Apple TV. If you rent on Apple TV, you can't watch any of the rental on an iOS device. Furthermore, you cannot select an iOS device to stream from using the Apple TV's remote and menu systemall AirPlay streaming must be initiated on the device from which you intend to stream.

Despite the minor limitations, AirPlay is an excellent additional feature for Apple TV and iOS device owners.

For more details, check out our slideshow above for screen shots, and our video below for a demo of AirPlay and AirPrint.