Apple TVs of the second and third-gen variety are getting update 5.1 today, which brings shared photo streaming and iTunes account switching to Apple's set-top box -- the combination of those two finally freeing parents from the potential nightmare of discovering their child's "not safe for parents" photo streams, of course. The update also adds some new AirPlay functionality, enabling users to "send audio content from Apple TV to AirPlay-enabled speakers and devices (including AirPort Express and other Apple TVs)." Beyond those two biggies, however, the rest of the update is rather nuts and bolts oriented -- head below for the full list.Continue reading Apple TV update 5.1 brings shared photo streams and iTunes account swapping, available nowFiled