MacRumors published a story that Apple has released the second betas of iOS and iPadOS 15 to registered developers.
Apple Seeds Second Betas of iOS and iPadOS 15 to Developers
Apple today seeded the second betas of iOS and iPadOS 15 to developers for testing purposes, with the updates coming two weeks after Apple unveiled the new software and released the first betas. Registered developers can download the profile for the first iOS and iPadOS betas from the Apple Developer Center, and once the profile is installed, beta updates will be available over the air. It's best to install iOS 15 and iPadOS 15 on a secondary device because this is early release software that could have issues. Apple has resolved a long list of bugs in the second betas of iOS 15 and iPadOS 15, according to the release notes.
