Apple today seeded the eighth beta of upcoming an upcoming macOS 15 Sequoia update to developers for testing purposes, with the software coming a week after the release of 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.
macOS Sequoia includes iPhone Mirroring, which allows you to control your locked iPhone from your Mac. You can open and use iPhone apps, interact with notifications, and drag and drop files between your iPhone and Mac and vice versa.
Read more at MacRumors.com