According to rumors, Apple's next iPhone, aka iPhone 5S or iPhone 6, could feature a 2MP front camera and support for dual-shot mode.
The rumor came from iOSDoc site and in addition to the new front camera and dual-shot support, new iPhone is expected to launch with iOS 7 operating system, a key behind the dual-shot support. In case you missed the dual-shot feature, it allows you to capture images and videos from both the front and the rear camera at the same time.

Unfortunately, according to the same source, it could end up to be an exclusive for the new iPhone and will not be available on any older device.

Source: Via GSMArena.com.