According to eurogamer site there is going to be a PSP-4000 in 2009 (!!!!)
http://www.eurogamer.net/article.php?article_id=343940
The article:
Sony plans to refresh the PlayStation Portable product line with a PSP-4000 model in late 2009 and launch a true successor - a PSP2, if you like - later.
Publishing sources, speaking to Eurogamer, were unable to provide any further detail on next year's update, which will presumably follow this year's PSP-3000 in taking an iterative approach.
Even fewer details were available on the PSP successor, but we're told that developers are already working on games.
Sony has not ruled out either scenario, despite SCEE president David Reeves' assertion in MCV last week that "there are currently no plans for a PSP2". "I go to Tokyo quite a lot and no one has referred to it - I think they have their hands full at the moment," he said, non-committally.
Sony UK told Eurogamer today that it would not comment on rumour and speculation.
anyway they dont deny that they work on PSP2, my guess we will learn a lot more about it in a years time. What to you think?
