Apple has released an update to its HomePod software. Version 14.1 adds support for the upcoming HomePod mini as well as the new Intercom feature for all HomePods and a handful of Siri enhancements.
The full release notes for HomePod software update 14.1 are as follows:
Software version 14.1 includes support for HomePod mini and new Siri and Intercom features. This update also includes bug fixes and improvements.