https://wccftech.com/homepod-will-add-support-for-making-phone-calls-confirms-ios-12-beta-5/

It was previously reported back in June that Apple was planning to add another oft-requested feature to its smart speaker, the HomePod. It was known at that time that HomePod would receive a bevy of new features with iOS 12. Now that the operating system is less than two months away, we couldn’t be more anxious to know what those features might be. Some of the features include Find My iPhone, multiple timers and the ability to make phone calls. While not everything was confirmed at that time, we now have evidence in iOS 12 beta 5 that the HomePod will add support for making phone calls.

Apple has seen fit to release the fifth developer beta of iOS 12 yesterday that brings quite a handful of new additions to the table. It has been confirmed in the beta build that Apple’s smart speaker will add support for making phone calls. It has been detailed in the setup screen of the HomePod that you can make phone calls.