At this year's Build 2017 developer conference, Microsoft unveiled the next iteration of its design language, dubbed the Fluent Design System - also known as Project NEON. A while ago, Windows Insiders got a glimpse at the implementation of Fluent in several of the first-party apps, among which is Groove Music, but the time has now come for those using Groove on the production ring of Windows 10 for PCs and Mobile to get the same design refresh.
The latest update, which bumps the app's version up to 10.17042.1411.0, brings the signature translucent look of Fluent to the sidebar and bottom part of Groove Music. Also included as part of the changelog is the ability for Groove to create playlists automatically - based on the genres and artists in your library - as well as the capability to watch music videos directly inside the app.
If you haven't gotten this update yet, head over to the Store and check for updates there. On the off chance that you don't have Groove installed, you can get it at this link.
Via On MSFT