Sony Japan has responded to criticisms about
visible scanlines on the new PSP-3000 systems. While Sony America is looking into the situation, Japan's statement doesn't bode too well. It seems that the scanline problem is a feature of the new LCD screens. SCEI says that the "PSP-3000 has a new LCD device with vastly improved picture quality, achieving a more natural and vivid picture than older models. By improving LCD response time to reduce ghosting, the horizontal-line phenomenon becomes more visible."
The worst news is that there's no fix. "Since this is caused by hardware characteristics, there is no plan to fix it with system software update." Looks like it's here to stay. We're still waiting on a statement from SCEA but, from the looks of it, they won't have much new to add.
Update: SCEA response, after the break.