@Jennifer @hi_mayank
I'm a long-time Firefox user and I just went in to check my privacy settings. I had previously denied them permission to do any tracking, and the update that installed last night did not override my choices. First thing folks new to Firefox should do is set their privacy settings. If you've previously blocked tracking those settings remain unchanged with the latest update.
@doug @Jennifer @hi_mayank OFC!
Also I can recommend using @torproject / #TorBrowser as main Browser which does set privacy as strict as can be...