Apple announced Made for iPhone Hearing Aids along side iOS 6 now the first Made for iPhone Hearing Aids are set for release. Apple's partnership with GN ReSound helped to create the LiNX hearing aid. The LiNX connects directly to the iPhone using a special wireless technology. Unlike other hearing aids the LiNX does not use an intermediary device to communicate with the iPhone. Apple says the following about Made for iPhone Hearing Aids on their accessibility webpage.
"Apple is working with top manufacturers to introduce hearing aids designed specifically for iPhone. They’ll deliver a power-efficient, high-quality digital audio experience, and will allow you to manage your hearing aid right from your iPhone. Just look for the Made for iPhone label. Explore the FCC's hearing-aid compatibility (HAC) ratings of iPhone."
A companion app allows users to change settings directly from their iPhone. The LiNX will cost $3,000 and will be available in 2014.