PSP Go to have processing power over previous PSP models
This is news to me, but the PSP Go will have an advantage over the other PSPs in processing power.
It could lead to PSP Go exclusives or simply special features that only the Go will have.
I think it would be a while though before PSP Exclusives since Sony has made sure everyone knows that the PSP Go isn't replacing the 3000, but only an alternative. With that in mind it could be a couple of years and not far off in the future will be a PSP 2 (With ability to play UMDs or rip them to flash memory)... Hopefully .