updated 08:24 pm EDT, Thu September 13, 2012
9-pin design could be limiting factor
[update] Apple has said that Video-out Lightning cables are forthcoming. A list of supported outputs have been added. The new Lightning connector used on Apple devices like the iPhone 5 doesn't support video-out, Apple's website suggests. Product pages for the company's Lightning-to-30-pin adapters state that "Video and iPod Out" aren't supported, even though the 30-pin products they attach to should be capable.
If Lightning is incapable of handling video, it could be a tradeoff of the format's smaller size. It might also force people to use AirPlay to push video to a display, which could in turn be used to spur more Apple TV sales. The iPhone 5 can run AirPlay Mirroring on an Apple TV at resolutions up to 720p, or normal AirPlay functions at up to 1080p.
MacNN suggests that readers contact peripheral vendors to ensure compatibility with Apple's adapters before purchase.