Apple will replace its traditional 30-pin connector with a smaller 19-pin docking port on the iPhone 5.
The mini port has been independently confirmed by TechCrunch which claims three independent manufacturers agree in the 19-pin connector. If this is the case then all current iPhone accessories with a dock will be incompatible with the iPhone 5. See also: Microsoft Surface Tablet release date and specs.
See also: iPhone 5 leaked images are fake
Although Apple has used the 30-pin connector since the third generation of iPod, it supposedly wants to save space. The connector looks similar to a Thunderbolt port found on the new MacBook Pro with Retina display and will be roughly the same size.
This is the latest of many rumours surrounding the iPhone 5. For more on the subject check out our iPhone 5 release date, specs and rumour round-up.