As the public release in September approaches, Apple is continuing its weekly cycle of iOS 15 beta testing today. The company has released iOS 15 beta 8 and iPadOS 15 beta 8 to developers, and they are rolling out now via the Settings app on iPhone and iPad.
iOS 15 beta 8 and iPadOS 15 beta 8 are available to developers via an over-the-air update in the Settings app. As usual, if the update does not immediately appear for download, keep checking, as it sometimes takes a few minutes to roll out to all registered developers.