With iOS chief Scott Forstall gone, his responsibilities have been scattered to the four winds. The bulk of it will be picked up by senior vice president Craig Federighi, who previously oversaw Mac OS X.

If Federighi is one of the less familiar names in Apple's pantheon, that's because he was . However, he's played a crucial role in OS X for many years, and has effectively run the Mac software division since .

Apple's been more insistent in the past couple years that iOS and OS X are essentially two sides of the same coin. Beginning with , Apple has worked to bring features from iOS to OS X, and that's only intensified with Mountain Lion, which brought elements like iMessage, Game Center, and notifications to the Mac's operating system. Expect that trend of sharing to continue moving forward.

It also might mean more releases of the two operating systems in concert. iOS 6 and Mountain Lion appeared in close proximity this year, and among the highlights of the two were features that either appeared on both (Mail VIPs, Facebook sharing) or capabilities that emphasized the connection between Apple's mobile and desktop platforms (iCloud Tabs).