Source: http://gizmodo.com/5974718/give-your-iphone-a-pro+quality-mic-with-the-zoom-iq5
The iPhone 5's capable of capturing really impressive video with its 8MP camera but the accompanying sound quality isn't all that great. But with this new add-on mic from Zoom, your iPhone 5 videos will finally have the audio they deserve.
The iQ5 is a Mid-Side stereo mic compatible with iOS 6.0 and above, connecting through an 8-pin Lightning port. It's central recording element rotates so you can film in both landscape and portrait. It can also be adjusted to pull both 90 and 120 degree fields as well as straight RAW audio and captures at 16-bit 44.1 kHz.
It will retail for $100 when it hits shelves later this year. Maybe Blue Microphones will have an updated version of its MIkey out before then.