On July 31, Sony announced a new system software release for invited participants that added multiple features to the Playstation 5 gaming console.
Some notable new features and improvements that came with this new beta release include using a second controller as an "assist controller", and using two controllers to operate the console "as if you were using a single controller".
In addition, the new update added support for Dolby Atmos for devices connected via HDMI such as soundbars or TVs. Support for high-capacity solid state drives were also improved, and the PS5 can now support M.2 SSDs with up to 8 TB of capacity, compared to the previous limit of 4 TB.
Sources:
https://blog.playstation.com/2023/07/31/ps5-beta-rolls-out-today-with-new-accessibility-and-audio-options-social-features-and-ui-enhancements/?_thumbnail_id=382868&sf268137366=1