They're probably adding a few new features to iOS 5.x to launch with the iPad 3. In years past they showed off the next major version in the March/April time-fr

They're probably adding a few new features to iOS 5.x to launch with the iPad 3. In years past they showed off the next major version in the March/April time-frame but this was when the iPhone was launching in June/July. With an iPhone release later in the year they don't really have to show off iOS6 until WWDC.