Apple has released the much-anticipated 2.0 update of the Apple TV software. The update brings a redesigned interface to the set-top box, as well as support for SD and HD movie rentals, iTunes Store browsing and purchasing directly from the device, AirTunes capabilities, flickr photo browsing, and more. For a more complete look at the changes, read our feature article. The Apple TV 2.0 update is available now through the “Update Software”…