According to Games Industry, Sony now has 7.9 million PlayStation Plus subscribers. How many of these have a PlayStation 4 is unknown (unlike with PS3, you need PS Plus if you want to play online on PS4), but it was just yesterday we reported that Sony has sold 13.5 million PlayStation 4 units. A reasonable guess is that a lot of the PlayStation Plus subscribers have Sony's latest console, but without confirmation from the platform holder, it's impossible to know for sure. Still, great numbers and no doubt Sony will be pleased.