We found minor changes in the app after installing it on nexus 6p, you can read them below.
Compatibility fixes for different devices
Minor Layout Fixes
The developers team of Google Play Store is keep working on the app to make it more faster and easy to understand for all mobile users.
The APK file of the today's update is available here to download.
GO through the below link to get the APK File
Google Play Store v7.9.90 APK