Although it's not available yet and Sony had previously stated that the PlayStation 5 will not come with support for it, now the tide has changed. The Japanese tech giant has just confirmed that, if there's enough demand, the PlayStation 5 will get support for native 1440p gaming via a future software update.
https://www.notebookcheck.net/Sony-PlayStation-5-might-get-1440p-support-after-all.503572.0.html