While its disappointing that BlackBerry and Samsung received approval ahead of Apple. A DoD spokesperson did confirm that the department is also looking at other operating systems and could approve iOS within a few weeks.
We've been informed by a Defense Department spokesperson that several other mobile devices and operating systems are also being reviewed for possible use. As for iOS, the Defense Information Systems Agency has a few outstanding questions about the operating system. It's expected that iOS 6 will join BlackBerry 10 and Samsung Knox in being approved sometime in the next two weeks.
If iOS received approval it would allow military agencies to use the iPhone and iPad for non-classified communications.