Macworld It’s been more than three and a half years since the first-gen HomePod mini was released, and honestly, we thought Apple had forgotten about it. Then on Monday, Apple dropped a surprising update to the tiny speaker—but unfortunately, nothing has really changed. Beginning Wednesday, the HomePod mini will be offered in a new Midnight color, replacing the previous Space Gray colorway. That leaves the AirPods Max and iPad Air as the only remaining Apple products that come in Space Gray. Apple previously offered the 2nd-gen HomePod in Midnight when it arrived last February, so it’s somewha…