One of the new things coming to iOS 10 is that third-party developers can develop emojis or gif packs for iMessage through an API Apple’s releasing. Getting the ball rolling, Apple’s released four new emoji sticker packs for iOS 10 beta users. If you’re on the beta program, you can download 3D Smileys, Hands, Classic Mac icons, and Hearts from the App Store. From the app, you can view the collections under a tab that has the App Store icon.