We knew Google+ was shutting down but Google announced they are now expediting this process since a new security bug was discovered with the Google+ API. 52.5 million users in connection with a Google+ API potentially had their name, email address, occupation, age and other information stolen.
Google is moving up the closure of the consumer Google+ from August 2019 to April 2019 and closing down all the Google+ APIs in the next 90 days.
We will sunset all Google+ APIs in the next 90 days. Developers can expect to hear more from us on this topic in the coming days, and can stay informed by continuing to check the Google+ developer page.
We have also decided to accelerate sunsetting consumer Google+, bringing it forward from August 2019 to April 2019. We want to give users ample opportunity to transition off of consumer Google+, and over the coming months, we will continue to provide users with additional information, including ways they can safely and securely download and migrate their data.
FYI – I believe that image above is from Halloween when Googlers dressed up as Google+ Ghosts.
Forum discussion at WebmasterWorld.