Stocks of PSP units are down worldwide, pointing to a possible official announcement about a re-design by Sony at E3 next week.
http://www.neogaf.com/forum/showthread.php?t=168451
This is clearly speculative but shortages have been a reliable indicator of videogame hardware revisions in the past. It also makes sense given the 333Mhz option now available officially via new firmware-- the current PSP hardware can barely handle this battery wise.
This may well be timed for the release of 333Mhz Wipeout Pulse this fall! I am sure hoping so. New handheld Wipeout with a fast and buttery smooth framerate and decent battery life => Frances very happy