I got 4 Google app updates last night.
The updates deleted all my Browser (not Chrome) bookmarks and replaced them with a bunch I don't want or need. My homepage was reset to google.com.
Worse, it appears that all my privacy settings were reset to allow maximum spying. I certainly don't want Google or anyone else tracking my location but after I turn location off, the next time I look at that screen, it's ON again.
Check your settings after you get these updates! Protect your privacy!