In an exclusive interview with Wired, Federighi said the frameworks for porting iPhone and iPad apps to the Mac have been in development for two years. He revealed some of the technical details around how this will work, and shared some of the types of iOS apps he believes make sense on the Mac. Federighi was also dismissive of touchscreen laptops — a product category that would seem like a natural addition to Apple’s line once laptops begin running touch-first mobile apps.
Still very light on technical details. I get why they announced this a year early — because they wanted to start shipping their own apps built on this — but it’s so unusual for Apple.