After a good couple of years of almost no blockbuster western developed games released for the PSP (aside from a couple of notable exceptions) Sony has finally brought attention back to the PSP - whether it's a result of booming Japanese interest (both sales and development wise) or not is anyones guess, but i think it is.
LittleBigPlanet PSP is confirmed for release
Motorstorm Artic Edge is confirmed for release
Assassins Creed PSP is confirmed for release
Rockband PSP is confirmed for release
Couple these PSP versions of major Playstation titles with the brand new Japanese developed IPs (such as Final Fantasy Agito XIII and Ushiro) and you can see that the PSP line up is stronger than it's been for a long time!