Is anyone seriously surprised by this news? It's pretty much a known fact that work on the next console starts shortly after the previous one was finished; the PS4 has been out for 18 months now so if Sony haven't started work on the PS5 then they'd be either expecting a super long generation or it would be the ultimate in complacency.
In addition the Vita 2 (if it is being made) will likely have been in development for the longest time as well. I wouldn't be surprised to hear more about this soon...assuming it's being released, that is.
Still, I suppose they have at least admitted it, however no doubt Nintendo and MS have also been working on their next consoles for some time. Doesn't mean we will be hearing about them soon though (well, Nintendo notwithstanding).
