Looks like Google is playing CYA.

Google has warned owners of Windows and Mac computers to urgently update their Chrome internet browser after learning that hackers may have exploited a mystery bug that has existed since its launch.

Google warns users to immediately update Chrome browser after critical bug discovered

Justin Schuh, Chrome’s security engineer chief warned users to update Chrome “like right this minute” on Twitter, declaring it a “#PSA [Public Service Announcement]”.

https://www.yahoo.com/news/google-warns-users-immediately-chrome-060000982.html