MacRumors published a story that Apple has released the third betas of iOS 17.1 and iPadOS 17.1 to registered developers.

Apple Seeds Third Betas of iOS 17.1 and iPadOS 17.1 to Developers

Apple today seeded the third betas of iOS 17.1 and iPadOS 17.1 to developers for testing purposes, with the betas coming one week after Apple released the second betas of iOS 17.1 and iPadOS 17.1.

Registered developers are able to opt into the betas by opening up the Settings app, going to the Software Update section, tapping on the "Beta Updates" option, and toggling on the ‌iOS 17 or iPadOS 17‌ Developer Beta. An Apple ID associated with a developer account is required to download and install the beta.

Apple Seeds Third Betas of iOS 17.1 and iPadOS 17.1 to Developers