Under certain apps, a new Family Sharing listing has appeared under the Information section in the listing. Developers have the option to enable or disable Family Sharing, and can even set an option to allow the feature after a certain date. So far, the change seems to be exclusive to the iTunes App Stores, and we haven't seen the listing on the iOS App Store
Family Sharing allows up to six family members to browse and access each other's iTunes, iBooks, and App Store purchases and share photos, a family calendar, and their locations. You can learn more about the feature here,
Family Sharing is expected to launch with iOS 8 this fall, along with the much anticipated iPhone 6.