The game was originally announced as a PlayStation 5 exclusive in September 2020.
That is more than likely the reason why Ragnarok will be available for both PlayStation 4 and PlayStation 5.
The release date has not been confirmed, but Sony Interactive Entertainment and Santa Monica Studio are confident that God of War Ragnarok will arrive before the end of 2022.
Shortly after the game was announced, SIE stated they planned on making games for and supporting the PlayStation 4 through at least 2022.
This brought about speculation that Ragnarok would be a PlayStation exclusive for last-gen and current-gen systems.
SIE President had "nothing to say" when questioned about God of War Ragnarok being a PS5 exclusive after the console was launched.
Fast forward to June 2021 and it was confirmed that it will arrive on the PlayStation 4, as well.
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