A new connector is coming too.
Apple would know what percent of iPhones/iPads are returned because some little wire in the current 30 pin connection inside the device gets bent and doesn't connect anymore.
If the new connector can go in either direction, then they could have 2 sets of connections (one for each side of the plug) in the iPhone or iPad. If one ever failed, there's a built-in backup and you'd never even know. The odds of both sides failing for the same pin mean whatever the return rate is now, if nothing else changed about how pins connect and bend, this design could cut it to 1/8th that.