The description of Google+
Google+ for consumers is shutting down April 2, 2019.
Learn more: https://support.google.com/plus/answer/9195133
If you’re a G Suite customer, Google+ for your G Suite account should remain active. Contact your G Suite administrator for more details: https://support.google.com/a/answer/6208960
You can also expect a new look and new features soon. Learn more: https://cloud.google.com/blog/products/g-suite/new-enterprise-grade-features-in-googleplus-help-businesses-drive-collaboration
The app may automatically update when new features are released or may require an update from the Play Store.