Sony Interactive Entertainment has been busy registering some important terms with the Japan Patent Office. The trademarks are related to future PlayStation releases beyond the forthcoming PlayStation 5 console. The company has been securing all iterations up to number 10, which following past release schedules for PlayStations, could see the light of day by 2050.
https://www.notebookcheck.net/You-could-be-the-proud-owner-of-a-Sony-PlayStation-10-in-2050.440505.0.html