What I’ve heard: iOS 7 is running behind, and engineers have been pulled from OS X 10.9 to work on it.
As he points out, Apple had this problem/solution before. In 2007, Apple had to devote some Mac resources toward getting the iPhone out the door. The press statement at the time read:
“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.
However, the Wall Street Journal says:
Apple is also expected to ship the next version of its iOS mobile operating system around midyear, other people familiar with the matter have said.
MG Siegler adds: Read more