Currents used to be "Google+ for G Suite" but Google+ shut down in 2019 so it was renamed to Currents at that time. I don't think it was over a decade old though, that sounds like a previous product also named Currents that was shutdown prior to Google+ for G Suite being a thing.
You might be thinking of the old Google Currents, which was a completely different product (a "digital newsstand" app) with the same name.