Alongside the release of iOS 6.1 earlier this week, Apple also rolled out Apple TV Software Update 5.2 for the second- and third-generation Apple TV. The new update adds support for Bluetooth keyboards, introduces the new Up Next play queue feature that debuted in iTunes 11, improves support for external AirPlay speakers, and adds the ability for non-iTunes Match subscribers to access their purchased music from iTunes in the Cloud. As usual, Appleā¦