https://wccftech.com/ps5-1440p-resolution-support-might-be-in-according-to-benq/

Quite a few gamers have been asking about PS5 1440p resolution support. After all, Microsoft already enabled this with the Xbox One S and Xbox One X a few years ago, but Sony hasn't provided any official comment on the matter. This left PlayStation fans quite negative about the possibilities that the next-generation console would allow users to select a native 'QuadHD' 2560x1440 resolution.

However, an article posted last week on the official Benq website suggests PS5 1440p resolution support might be in after all. Here's the blurb that we're specifically referring to: