The statement isn't exactly a surprise, given that Sony is constantly thinking about new hardware and another PlayStation is all but guaranteed after the success of the PS4. While online speculation and research has already graced us with some Xbox Scarlett details, Sony has finally confirmed that they are working on the successor to the PlayStation 4.
It's most likely that the former is true, however, sources apparently "in the know" told Financial Times that the next PlayStation might "represent a major departure from the PS4, and that the fundamental architecture was similar". That's not as surprising, as the PS4 has dominated this console generation, repeatedly topping the Xbox One in United States and worldwide sales, month after month. As always, details regarding Sony's next-gen console are quite hush hush, so fans are now relying on leaks, rumours, and speculation to come up with the goods. However, Yoshida didn't say the device would be called the "PlayStation 5".
It clearly feels that the future of gaming remains with the home console.
Sony has been in the lead for years when it comes to console sales. If the system works as Sony describes in its patent, it should be able to remaster ageing video games on the fly to bring their look closer to a contemporary game.