Let's hope that Apple will use upgraded wifi module in homepod this time. 802.11n in Homepod mini was a joke (and downgrade to 802.11ac in previous model). Homepod mini has many connection issues (especially in mesh wifi environments and when two homepods are working in pair). Look for "I am having trouble connecting to the internet" Siri issue in Google.
802.11ax standard has many enhancements for IoT class devices (more secure with WPA3, more energy efficient with target wake time, improved beamforming and MIMO).
New Apple HomePod and updated Apple TV devices may be released within the next year, according to a report by Mark Gurman for Bloomberg. The upgraded HomePod would be closer to the original device, with size and audio quality to match. The new Apple TV model is slated to have greater processing power from an A14 chip.