In a recent interview with CVG, Shuhei Yoshida, president of Sony Computer Entertainment Worldwide Studios, said that he expects the lifespan of the PlayStation 4 to match the PlayStation 3's planned 10-year lifespan.
"I would say the same or similar," Yoshida said, "because the PS4 has an incredible amount of RAM and I don't think any launch titles need that 8GB of RAM. So there's room for growth in both game content and system features."
Previous Playstation consoles have each sold for more than 10 years before being discontinued, with the Playstation selling more than 100 million units and the Playstation 2 selling over 150 million. Currently, the Playstation 3 stands with 77 million units sold, with more than three years remaining before its 10th on the market, though Yoshida says that it is already starting to show its age.
"In the middle of PS3 we really hit the limit with what we could do on the system side. We wanted to add the cross-game voice chat that many people asked us about, but we had no room in the system memory at all to add it."
The PS4, on the other hand, is said to have been designed with an excess of power and capacity to prevent future upgrades from exceeding the system's bounds. That way, the same issues that arose late in the life of the PlayStation 3 won't interfere with the gradual growth of this new system.
"So the PS4's enlarged, very fast memory allows us in the future to improve and add more new features. And at the same time we are continuing to invest and add onto the online services so that, three years from now, the PS4 will be much, much better than PS4 this holiday - and that was the case on PS3 ..."