Sunset Overdrive was originally released exclusively on the Xbox One in 2014, developed by Insomniac Games and published by Microsoft Studios. The Sunset Overdrive I.P. is still owned by Insomniac which was acquired by Sony in 2019 after the developer launched the ridiculously popular Marvel’s Spider-Man on the PlayStation 4.
By registering the trademark it means that Sony is maintaining the game’s patent but doesn’t necessarily indicate that they are actually going to do anything with it. Leaks that have shown up in response to this news suggest that Sunset Overdrive: Refreshed Edition for PlayStation 4 and PlayStation 5 are slated for Q3 or Q4 of this year but at this stage, it’s all merely speculation.