More PSP-4000 details tell of shoulder play and controls

Eurogamer's just posted up more detail on the as-yet unannounced PSP-4000, saying there'll be no UMD and talking about what controls will be allowed with the slide screen closed.

From the piece:

Our development source today confirmed these reports, adding: "The screen is basically the same as the one in the 3000 - except it slides." When 'closed', we were told, the screen won't cover the entire face of the console, but the unit will be "significantly smaller in width" as a result.

With the console in its 'closed' state, most controls will be inaccessible. However, our source claims that games which use the shoulder buttons exclusively - such as LocoRoco - will be playable, as these inputs will still be accessible. It's expected that the unit can also be used for media playback in this configuration.

There's more through. Expect the worst kept secret in the world to be announced at E3.