Google Play Android apps has rolled out new updated version i.e. 7.4.4422-1.N. This new music version of Android apps is not as usual update though no where in the play store page it's mention anything.
But Google Play Music apps version 7.4.4422-1.N update comes with new playback and downloading options on Wi-Fi network.
Google Play new version of the music streaming app comes with new options for both streaming and downloading tracks for offline listening. This option is under app’s Settings >Download quality setting > Low, Normal and High.
Update for Google Play iOS version is arriving soon. Google Play Music app for the iPhone and iPad version 3.20.1005 is currently rolling up.