The time between the developer preview for iOS 4 and iOS 5 was the longest to date. Rather than a spring event like in previous years, Apple didn't reveal any details of iOS 5 until WWDC 2011 in June. Also, rather than a summer release, general availability was held off until October of that year. So what did Apple manage to achieve with those extra months? Several things that weren't made available to developers, including Siri and Notification Center widgets. iCloud, however, and the sync services that came with it, were big. As was Newsstand and its subscription services, at least potentially. In keeping with tradition, however, neither was without controversy.