Last October, Tim Cook tasked Jony Ive with leadership of the company's Human Interface teams in addition to his role as head of Industrial Design according to MacRumors.

"Some suggested that in Apple’s next mobile operating system, Ive is pushing a more “flat design” that is starker and simpler, according to developers who have spoken to Apple employees but didn’t have further details. Overall, they expect any changes to be pretty conservative. For the past few years, Apple has unveiled versions of its mobile operating system in the summer.

Design is one example of the increased “collaboration across hardware, software and services” that Apple said it was aiming for when Cook pushed senior vice president and mobile software chief Scott Forstall out of the company last year."

If you understand that iOS is actually Unix based you can see the similarities with iOS being a “pretty” version of Unix, or at least that’s how I always felt about it. As an iPhone\iPad user I say innovate, the design is fine.