The first suggestion that Sony may be forced to delay the launch of PSP has come from Sony Computer Entertainment network systems boss Izumi Kawanishi, who told a Japanese publication that the schedule depends on game publishers. Speaking in an interview with Impress Watch AV, Kawanishi said that it is still possible that the console will be released this year in Japan, but that this depends on whether game publishers will have software ready for launch.
News source: GamesIndustry.biz