It could also join existing setups for either platform, or both together. (mobilesyrup.com)
A nice piece for those who don't have existing multiroom setups, but a bad option for those looking to augment existing setups or create new multiroom setups just with HomePods. (imore.com)
Calendar Sync support is already gone for new users, though again existing setups will continue to work. (theverge.com)