It seems that HomePod and Homepod Mini will soon have support for space audio and audio without loss through Apple’s music. The home page 15 Beta 5 includes options that allow reproduction without losses and Dolby Atmos.
Not all beta users will see the levers, according to 9to5mac. If you are running the last IOS 15 and Homepod Beta, you can check if you are active by accessing the Home Options menu in the Home application, touching your profile, then average and Apple music.
Earlier this year, Apple said it would bring a transmission without loss of energy from Apple music to Homepod and Homepod Mini through a software update, but did not provide a timeline. Now, it seems that speakers can transmit music without loss soon (unless the option either life for you in beta).
Apple is expected to deploy their latest operating systems in the coming months. When you do, you can combine a second homepod mini to Apple TV for stereo audio.