After releasing iOS 13.6, watchOS 6.2.8, and macOS 10.15.6, Apple has now released a new software update for the HomePod. The update to version 13.4.8 has no new features included, but focuses on general improvements for stability and quality, according to Apple.
This comes two months after the release of HomePod software version 13.4.5, which had exactly the same release note as software version 13.4.8.
The software update is installed automatically on the HomePod, though you can manually install it if required. You can launch the Home app on your iPhone that you used to set up the HomePod, and tap on the Home icon situated at the top-left corner. Then, select Software Update and tap on Install.