The PSP 4000, a final refresh model, will appear in late 2009, say these sources, followed by an official successor to the PSP at a later point.

You may well have seen reports over the weekend detailing how a peripheral ad in MCV mentioned "PSP-4000". In short, it's a load of bollocks NegativeGamer called Accessories 4 Gamers - the ...

1up has obtained fresh details surrounding Sony’s long rumored PSP-4000, with sources close to the website claiming that the revised handheld will be known as the PSP Go! when it hits stores ...

It seems that a PSP-4000 is very much in the works for 2009. We'd imagine the updated PSP would address the screen interlacing issues that the PSP-3000 suffers from, but we're just speculating.

Don’t expect the original PSP to disappear under the carpet, though. Those same sources have revealed that a third hardware revision – the PSP-4000 – will make an appearance in late 2009.

A listing advertising LittleBigPlanet accessories for the PSP-4000 has been exposed as a printing error, reports Negative Gamer. Published in trade magazine MCV, the Accessories4Technology ...

Sony plans to refresh the PlayStation Portable product line with a PSP-4000 model in late 2009 and launch a true successor at a later date. Publishing sources, speaking to our sister site ...

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: ...

It's no surprise that you have heard and/or read all about the Nintendo 3DS and PSP-4000. Well, there is a rumor floating around about their release dates.