9to5Google has done an APK Teardown of version 7.8 of the Google Play Store for Android.
It found strings in the app that point to a new security feature and Instant App support, which has reportedly been in the works since 2016.
Instant Apps will allow users to use parts of applications without downloading them.
When running the app, you will be able to choose which Google account to use for sign-ins and payment. It also appears that users will be able to opt out of Instant apps.
According to the report, the previous version of Google Play included strings for a “Verify Apps” feature. This has been renamed “Verified by Play Protect”.
The feature has alerts which warn you when an unknown source is attempting to update an app, and warn of malware and spyware.
Other strings discovered in Google Play 7.8 include pre-registration rewards when registering for an app before launch, and an app discovery service that will let you view apps from within another app.