Apple TV

Exactly 24 hours ago Apple published the first beta for developers of iOS 11.4, tvOS 11.4 and watchOS 4.3.1

When the changes are made, you can only access the iTunes Store on Apple TV devices (2nd generation) or later.

MacOS Sierra

As of now, all users can download and install the updates on MacOS Sierra 10.12.4, iOS 10.3, watchOS 3.2 and ...