Sony Japan president Hiroshi Kawano has said there are no plans to immediately shift from the PS3 to the PS4.
"It's been seven years since the release of the PS3," says Kawano, "and the console continues to sell at a constant pace, plus we have many upcoming titles. We have no intention of immediately shifting from the PS3 to the PS4."
The cloud service that will allow users to play PS3 games on the PS4 will launch in 2014, and Kawano says it will likely result in "some people [switching] consoles from the PS3 to the PS4." This switch will not be forced though - "it will be a gradual process, and to say 'we're releasing a new console, so trade in your old ones for it' would be a maker's ego talking, plain and simple."