It looks like Google could be ushering in some big changes to the Play Store, with the latest Play Store v5.12 APK being torn down and dissected by Android Police, where they found Families, Family Library and Gifting options.
The Family Library is a big change for Google, as it would allow family members to buy and share content from the Play Store with their closest family members. We don't know how it would work exactly, but there would be a 'creator' for the Family Account, who would then be able to send invites to the group - similar to how the account sharing on Spotify works.
Next up is Gifting, where you can buy someone an app, enter in an email address, your name and a message - and voila, you've just gifted them an app, or a game. If the gift is rejected, you can send it to someone else, but we don't know if there'll be a refund or store credit option just yet. The new Play Store update should roll through soon, with these upgrades in tow.