Users in the Android Beta Program may be seeing a message on their Nexus Players to update their software. Users will be instructed to update to Android 7.1.2. This is a small update, not even getting a bump up to the API version. It “is an incremental maintenance release focused on refinements”, so there isn’t anything particularly new for users to see. The differences may be completely internal.
The Nexus Player is confirmed to get the update, and every user should be getting the update once it exists beta. If you notice any of the “small number of enhancements for carriers and users”, let us know in the comments below.