Well, Apple certainly isn't manufacturing the displays themselves, so that's partially true. However, like on the iPad3 - Apple probably paid the manufacturer (in that case, Samsung) for a large chunk of the NRE to develop that screen, and has in return been granted some period of exclusivity to it. Knowing Samsung, it's probably 12-18 months. On the laptop display, I don't know if we know yet who supplies them, but expect a similar deal.