Unlike most AAA games these past few years, Persona 5R is here to remind the industry once again that you can indeed have a game with gorgeous visuals and hundreds of hours of content without having it weigh thrice than it needs.
Coming from a Japanese twitter user, dolly_silent, they claimed that Persona 5 The Royal will only weigh ten more gigabytes, making it 30 total. Knowing that The Royal still uses the vast majority of Persona 5‘s assets, it is indeed good news that there seems to be this much additional content.
Either way here in the west, we still have a few more months to wait before finding out! For info, Persona 5 The Royal is referred to as a remix or even a remake of the critically acclaimed JRPG by Atlus. Set to release in March of 2020 in the west.