It has been reported by MacRumors that Apple has released the sixth developer beta of macOS Sequoia 15.1.
Apple Seeds Sixth Developer Beta of macOS Sequoia 15.1 [Update: Public Beta Available]
Apple today provided developers with the sixth beta of an upcoming macOS Sequoia 15.1 beta, with the new update coming two weeks after Apple released the fifth 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.Apple Seeds Sixth Developer Beta of macOS Sequoia 15.1 [Update: Public Beta Available]