Additionally, it's now possible to choose where to play music. For example, using watchOS 4.3 you can choose to play music on your iPhone's speaker, AirPods, or Apple TV. You can also 'Delete from Library', Love, or Dislike songs.
watchOS 4.3 beta was released to developers yesterday. The configuration profile can be downloaded from the link below. Please follow iClarified on Twitter, Facebook, Google+, or RSS for more updates.