Changes in Time Machine reflect continuing development of this Mac-only feature, backtracking on using FSEvents, and making backups more complete.
What do we want? Time Machine backing up to APFS storage. When do we want it? Well, not quite yet.
Coming up to its 12th birthday, Time Machine backups have changed a great deal, but still rely on a feature almost unique to HFS+. What is their future?
Was WWDC a damp squib after all? With only one new unaffordable Mac announced, and more dreadful privacy dialogs on their way, you might think so.