In early 2023, current users of Google Currents (formerly known as Google+ prior to July 2020) will have most of their data migrated to Spaces in preparation for the service shut down in mid-2023. If you're new to Google Spaces, you can get more information about it here.

If you’re concerned about losing any data due to this transition, including Google+ posts that were published before July 2020, refer to this Google Article on how to download an archive of your Currents data.