If you’re hankering after a new PSP, Sony are going to show off a new one at E3 in Los Angeles in May. Probably called PSP GO! It will feature a redesigned look and may drop the use of UMDs. It should hit the US by the end of the year.
Buy a PSP 3000 now
New: Buy a PSP 3000 from Amazon.com
Related: PSP 4000, PSP surprise