Pricing will start at $499 for the 16-gigabyte version, $599 for the 32-gig version and $699 for the 64, Jobs said.
Having 3G mobile access will cost an extra $130 on each, he said.
Two mobile plans will be available through AT&T, and there will be no contracts, allowing customers to opt out at any time, according to Jobs.
They are scheduled to begin shipping in 60 days.