The Windows 10 Store will now be the go-to shop for Music purchases on Windows 10. Users can browse music by top songs, albums, and by genre, just as you'd expect, however, there are a couple of caveats at the moment. For right now, music purchases won't download automatically, so you'll have to jump into the Music app to pull downloads in. Similarly, if you have an Xbox Music Pass, you'll be able to continue adding music to your collection from the Music app, but you'll have to venture to the Store beta for purchases.
Speaking of the Music app, Microsoft notes that today marks the removal of the "Preview" tag from both it and the Video app:
"Now that the music experience is almost lit up end-to-end, we're making a few more changes to get us ready for the release of Windows 10 on July 29th. No more "Preview" – out with the old and in with the new! The new music and video experiences are now the default in the Windows 10 Insider Preview. Now when you launch the Music and Video apps, you'll get the new apps. The preview versions will be removed in future builds."
With today's changes, it looks like the Store is coming along nicely as a one-stop shop for all of your app and content needs.