It's understandable that everyone read the original changelog as confirmation that Timeline was going away. In the last year, Microsoft has pulled Timeline from its Android launcher app, and it's been scaling back Cortana, which includes several important integrations with Timeline. It's even discontinuing the Android and iOS versions of the voice assistant.
As this is an Insider build, most people won't have to worry about losing Timeline sync right now. The feature still works if you've got multiple Windows 10 devices, and it will until whenever this change filters down to a mainline release. Build 21359 also adds an option to automatically restart apps after signing in, which could make those mandatory update restarts slightly less annoying.
Now read:
