New Sony PSP 2 by year end?

According to new "highly-trusted sources" contacting VG247, there will be no PSP 2 anytime soon, but instead a completely redesigned PSP, dubbed the PSP-4000.

Internally the system would be identical to the PSP-3000, but the hardware would be a "complete aesthetic overhaul", adding a large slider screen and the much hoped-for dual analog sticks.