Codemasters has now confirmed Dirt 5 will launch for PlayStation 5 alongside the console itself - so from 12th November in some regions, and on 19th November here in the UK.
As on Xbox Series X, the next-gen version includes 4K and 120FPS options, plus faster loading. Expect "DualSense haptic feedback and adaptive triggers" as well.
As previously announced, there's a free upgrade to the PS5 version if you buy it first on PS4 (and you can play online cross-gen with other PlayStation owners).