Games which support 1440p will display at native resolution, while games that display at 4K will supersample down to 1440p for a smoother image.
After PS5 was updated with support for variable refresh rates in April, Sony has now confirmed that the system will finally be able to output at 1440p resolution.
There are a lot of these displays around, many with features like VRR, that PS5 owners will be happy to finally use to their full ability.
Also included in the beta are a bunch of interface customizations, including the ability to group games together in folder-style Gamelists.