Google has released new update of it's Play Store app with new access to join/Leave and give feedback betas. So overall these update is all about beta apps.
You can see when your are in beta version, and also can leave or join to beta. They also added option to give feedback direct to developer from Play Store. You must need to download this update to use beta program. APk file is ready to download
Here is the Change-log of this update :
See beta status at the top of app listings when you are enrolledJoin/leave beta test from app listing (at the bottom)Leave feedback for the developer of a beta app rather than a public reviewUnreleased apps labeled as such at the top of the listing pageThese change-log I found from APKMirror they. I also have downloaded this update to explore new features of this update.
Google provided direct access to join beta tests right from the Play Store client. You just need to join necessary G+ communities to use this feature.
You can check the status of beta testing at the right on the top. When you're running the beta version of particular app, so you can check the status there in Play Store.
This update will also give you rights to leave an feedback for developers of apps you are beta testing on playstore page.
Download APK File of this update from below link, to get all above features.
Google Play Store v6.7 APK