According to Chinese analyst Sun Chang Xu, the iPhone 6 will increase its 1.5µ pixel size to 1.7µ. This means that more light will be captured per shot, resulting in more detailed photos.
The HTC One (M8) has 2µ pixels and excels in low-light shots, so hopefully the increase in the iPhone 6 will make a noticeable difference.
In addition to the pixel size increase, Xu believes that the iPhone 6 will also have electronic image stabilisation (EIS) to reduce blur.
This is good news, but we're not sure if will hold up to the true physical optical image stabilisation (OIS) found on devices like the LG G2. The G2 has a 'floating lens' which is able to move around, allowing you to focus on a subject even while the phone is moving.
Electronic image stabilisation on the other hand uses an algorithm which compares one frame's contrast and pixel location to the next. If there's a difference detected between the two frames, then the device's software automatically compensates for it. It's not always as accurate as OIS but it will be interesting to see how it performs on the iPhone 6, if the speculation proves to be true.
The iPhone 6 is also expected to land with a larger screen and all-new design, and it's likely to be revealed in September alongside the iWatch.
Stay tuned for more info as and when we get it.