A hard-disk isn't out of the question, despite the new PSP Slim and Lite not including such a feature at launch this summer. In fact, concede that that a hard disk still might arrive in some form, though the company is still toying with the idea of relying purely on Flash memory.

Speaking to games site Eurogamer.net at the Games Convention, SCEE boss David Reeves admitted that it wasn't ruled out, but added "The only thing I would say is that the flash memory is simply so cheap - you can get an 8GB Memory Stick for under 100 Euros, and on 8GB you can get a lot of content.

"I think the big debate is - there's a point in time when you have to put a stake in the ground and say we're going to go with flash memory or we're going to go with hard drive. I don't think they've put that stake in the ground just yet."

He stated that Sony will see how the PSP fairs over this period, before deciding what the 'next step' should be. "You might hear more later," he confirmed.

By Luke Guttridge