You can download the update directly on your device through the Google Play Store or by using the following link:
Google Music version 4.4.811H has the following new features and improvements:
- Added ability to keep Thumbs Up, Last Added, and Free and Purchased playlists on device.
- Auto-generated Instant Mixes on Recent tab based on your favorite songs.
- Gapless playback support (on devices with Android 4.1 or later)
- Improvements for keeping music on your device for offline playback.