PS4's Existance Confirmed

It has been confirmed by Masaru Kato of Sony that the electronics giant is working on a 'future platform'.

Masaru Kato said “For the home equipment the PS3 still has a product life but this is platform business, so for the future platform – when we’ll be introducing that product, I cannot discuss that – but our development is already under way, so the costs are incurred there."

Maybe PSN will be fully functional for the release of the new machine.