Google has started to disseminate a new Material Design based UI for the Google Play Store. Besides using Google Sans font, the nab=vigation bar has been moved to the bottom of the screen.
New Google Play Store UI heading your way makes it easier to navigate - PhoneArena
At last! Google makes its new UI for the Play Store official - PhoneArena
Google Play Store to soon reorganize the main navigation options - PhoneArena
Google Play Store Gets a New UI and Gets Rid of Hamburger Menu
Google Maps - Wikipedia
Google Play Store's new UI gets rid of the hamburger menu
New Google Play Store UI heading your way makes it easier to navigate - PhoneArena
Why Your App Isn't Ready for the New Google Play Design
Yep, Your Google App Drawer Now Scrolls Vertically! : r/Android