Microsoft says “the first phase will target newer devices … we will then expand the Creators Update release to additional devices based on the feedback.”
The process will take “several months”, but if you are impatient, you can upgrade immediately using the Update Assistant.
Windows 10 Mobile is also being updated, with rollout for phones beginning on April 25.
The privacy settings review screen is simplified, with an on/off switch for five categories: Location, Speech recognition, Diagnostics, “Tailored experiences with diagnostic data”, and Relevant ads.
Another oddity is that the simplified settings screen does not reappear (in my testing) if another user signs in, even though they are per-user settings.
This states that “Microsoft collects and uses information including your location and location history, contacts, voice input, speech and handwriting patterns, typing history, searching history, calendar details, content and communication history for messages and apps, and other information on your device.