iOS/iPadOS 15.1, watchOS 8.1 and tvOS 15.1 are released. Xcode 13.1 is also released.
These releases include SharePlay functionality.
HomePod software is also updated to 15.1 allowing Lossless and Dolby Atmos audio.
Reference: Apple Releases tvOS 15.1 for Apple TV HD and Apple TV 4K With SharePlay Support, Lossless Audio and Dolby Atmos Support Come to HomePod With 15.1 Software Update, Apple Releases watchOS 8.1 With SharePlay Fitness+ Group Workouts, Fall Detection Enhancements and More, Apple Releases iOS 15.1 and iPadOS 15.1 With SharePlay, ProRes, Auto Macro Toggle, Vaccine Cards in Wallet and More, iOS 15.1 is rolling out to iPhone users today, here’s what’s new, Apple releases tvOS 15.1 with SharePlay and HomePod 15.1 with Lossless support, Apple Releases iOS and iPadOS 15.1 with SharePlay, Safari for iPad Fixes, Shortcuts Improvements, and More, iOS 15.1 lets you store your COVID-19 vaccination card in the Wallet app, iOS 15.1 Features: Everything New in iOS 15.1, Here are some of the best SharePlay apps for iOS 15.1 and iPadOS 15.1
Developer:Check apps for compatibility issues on new SDK, new Xcode and new OS releases.
QA engineer:Check apps for regressions.
PM/DM:Release SharePlay-enabled apps.