I was having the same issue. Rebooting my HomePods made the update show up.
Yeah, that finally did it for me.
I restarted them, forgot about it for a few hours, and when I came back they had auto updated to 17.
Working for me.
Not showing up for me either. Don’t know why.
Edit: They show up when I look in the Home app on my Mac, but not on my iPhone.
Weird, I wonder if this is some sort of phased rollout so they minimize risk of something goes wrong. Major HomePod OS updates haven’t always been Apple’s smoothest OS releases.
Showed up for me within 10mins of the update dropping but my brother’s still aren’t showing anything 9hrs later.
@Ghostalmedia @apple_enthusiast I haven’t seen them yet either FWIW.
I have multiple HomePod minis, the update appeared after a few hours for me. I have had the same issue with previous HomePod updates, checking for updates does nothing for a while and then they eventually catch up.
At least it’s not as hard as trying to summon an AirPods update.