Groove Music and Films & TV have snagged updates. The new version is 3.6.1577.0. The update seems to bring only one fix that is related to a Continuum for Phones bug while using these apps. This has been communicated by a Microsoft employee on Twitter.
@groovepoint Single fix for a Continuum bug reported after last update.
— Ellen Kilbourne (@ellenment) December 11, 2015