It has been widely rumored that Apple is working a new iPhone 6c to launch later this year.
Here we have images from Future Supplier of the purported rear shell of the rumored device.
From the article
iPhone 6C Rear Housing-1At the first glance, it looks just like a normal iPhone 5C rear housing, but if you take a closer look at it, you will find something different.
There are two distinct differences. The first is the rear camera flash hole. For iPhone 5C, the hole is a round shape, while for the purported iPhone 6C, the flash hole is more like the iPhone 5S, an oval shape.
The second is on its bottom. Two loud speaker holes are on the bottom of this purported iPhone 6C rear housing while the iPhone 5C only has one.