Apple today released Apple TV Software Update 5.3, the latest update for its second- and third-generation set-top boxes. The latest update adds support for HBO GO, ESPN, Sky News, Qello, and Crunchyroll for users in specific regions such as the United States. Apple has yet to update its Apple TV Software Update page with more detailed information on the release, so it is unclear yet if there are any other changes. Apple TV Software Update 5.3 is available…