Reddit:

My Fiance is from Mexico and used to C°. Now that the HomePod can tell the difference between us, Siri will now respond to me in F° and to her in C°. Which is a nice but small touch.

This is a small thing, but indicative of a larger trend of HomePod Siri reacting to different voices with preferences stored for each user. Much in the same way as knowing who said, “I love this song” and adjusting the right user’s Apple Music preferences.

That said, I’m still hearing from people who can’t get multiple voices working on their HomePods. And, anecdotally, my wife suddenly disappeared from our setup over the weekend, no idea why.