MacRumors has reported that Apple has issued the release candidate for macOS Sequoia 15.1.
Apple Seeds macOS Sequoia 15.1 Release Candidate
Apple today provided developers and public beta testers with the release candidate version of an upcoming macOS Sequoia 15.1 update, with the new software coming one week after Apple released the seventh beta.
Registered developers can opt-in to the macOS Sequoia beta through the Software Update section of the System Settings app. An Apple ID associated with an Apple Developer account is required to get the beta.