https://wccftech.com/apple-releases-ios-15-1-and-ipados-15-1-beta-with-shareplay/

Apple has just released the first betas of iOS 15.1, iPadOS 15.1, watchOS 8.1 and tvOS 15.1. The update includes SharePlay.

On Monday, Apple released iOS 15, watchOS 8 and tvOS 15 for everyone to download. And already, the company is working on the next update for users. Right now, if you are a registered developer then you can download the first developer betas of iOS 15.1, iPadOS 15.1, watchOS 8.1 and tvOS 15.1. This update is extremely important as it includes SharePlay, an important feature which didn't make the cut in the initial release of Apple's major software release that happened on Monday.