For MacBooks with a notch
Oreo turns the dead space around your camera into something useful — live activities as they happen, and a desk of widgets a click away.

The Desk — your widgets, one click from the notch.
What it does
Artwork, scrubber and transport for whatever's playing — Music, Spotify, a browser tab. Swipe across the notch to skip.
Drop files on the notch to park them. Hold one there and it splits into lanes — keep, AirDrop, compress, convert, zip.
System HUDs replaced with something that belongs to the screen instead of floating in the middle of it.
Your next event, with the Zoom or Meet link pulled out of it. To-dos that sync to your other Mac over iCloud.
Everything you've copied, one click from putting it back. Passwords are never recorded — concealed clips are skipped.
Pick the widgets, set their widths, reorder them. Weather, timers, notes, shortcuts, a webcam mirror and app launchers.
Live activities

Questions
Yes for the real thing. On a Mac without one, Oreo draws its own handle at the top of the screen and everything else works the same.
Apple Silicon running macOS 15 Sequoia or later. There's no Intel build.
Only what you switch on. Accessibility to replace the volume and brightness HUDs, Bluetooth for AirPods battery, Calendar for events, Location for weather, Camera for the mirror. Each one is asked for the first time you use that feature, never at launch.
No analytics and no account. Your to-dos and notes sync through your own iCloud, which we can't read. The clipboard history and the file shelf never leave the Mac they're on.
Seven days with everything switched on, and nothing to enter up front. After that the live activities and the Desk need a licence — $12, paid once, for every Mac you own.
Oreo checks with Apple's notarised update mechanism and asks before installing anything. It never updates silently.