Since there has been no leaked iPhone 5 this time around - or nobody is willing to pay good money for a lost/stolen iPhone 5 (after what happened to Gizmodo) the iPhone rumour world is clasping onto any little snippet of information.
This evening that information comes from iPhone parts supplier TVC Mall, who has posted images of what it claims to be iPhone battery, camera lens, and earphone audio jack flex cable.
Mac Rumours shows the apparent new parts in comparison to MacFixIt's photographs of the same parts in the iPhone 4. There are very superficial changes between the different units. The so called iPhone 5 battery is a similar shape to the iPhone 4 battery, the main difference being that the specifications listed on the label 3.7V and 5.3Whr on the new battery, while the iPhone 4 part is 3.7V and 5.25Whr, a very minimal change.
The camera module for the back camera also closely resembles iPhone 4's camera, although the flash unit is further away.