I know one of their Windows 10 preparation updates reset a telemetry setting in Windows 7.
I recall it was "Turn off Windows Customer Experience Improvement Program," which is disabled by default. There might have been other settings. (Search for security hardening guides for Windows to get a check list.)
What prompted me to check this was when Microsoft chose to willfully ignore the opt out setting they had handed us prior to the release date of Windows 10.. Let's not forget that either!
I wonder how privacy settings are being handled, and whether harm is being done to those who are automatically upgraded.