The development of Apple's next mobile operating system, iOS 7, is running behind schedule according to speculation, with Mac OS X developers required to aid the construction of iOS 7.
Comments from Daring Fireball's John Gruberindicate iOS 7 might be delayed and in-turn OS X 10.9 may be affected.
"What I've heard: iOS 7 is running behind, and engineers have been pulled from OS X 10.9 to work on it," Gruber said.
Apple in 2007 devoted Mac resources to the production of the iPhone, releasing the following press statement at the time:
"iPhone contains the most sophisticated software ever shipped on a mobile device, and finishing it on time has not come without a price. We had to borrow some key software engineering and QA resources from our Mac OS X team. As a result, we will not be able to release Leopard at our Worldwide Developers Conference in early June as planned.While Leopard's features will be complete by then, we cannot deliver the quality release that we and our customers expect from us."
Gruber also speculated on iOS 7s design and the influence of Apple's Senior Vice President of Human Interface Jony Ive, with significant changes away from skeuomorphic design that encompasses many iOS apps.
"Regarding Jony Ive and iOS: Word on the street is that iOS engineers with carry privileges all have some sort of polarizing filter on their iPhone displays, such that it greatly decreases viewing angles, thus making it difficult for observers to see the apparently rather significant system-wide UI overhaul."
The launch date of iOS 7 is yet to be announced.
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