Well, look at that, another update for Xbox Music is live in the Windows Phone Store. Just last week the app was updated to version 2.6.318.0, now it's at version 2.6.322.0. The changes last week were vague, with Microsoft saying the update addressed a number of customers issues and bug fixes.
So far the detailed changelog isn't live yet on the Xbox Music UserVoice page. We'll update once it is live. Until then, let us know what changes you notice in this update to Xbox Music.
Thanks for the tip Trevor H!