An anonymous source, who claims to have inside information, is now shedding light on two of the most important bits of the potential G5's hardware. The camera, for one, will use a new Sony-made 20MP sensor with a half-inch diagonal - one of the largest around.
For example the G4 has a 1/2.6" diagonal, this year's Samsung Galaxies (S6/S6 edge/S6 edge+/Note5) and the iPhone 6/6 Plus use a smaller 1/3" chip, and Sony's own Xperia Z5 series boast a 1/2.3" imager. All those are of course miniature compared to the 1/1.2" sensor of the Nokia PureView 808, but iconic or not, the 808 is ancient history. What's even more interesting though, is that the new sensor will only be provided to LG, and won't be used by other manufacturers.
The source also states that the upcoming LG flagship will be powered by the Snapdragon 820 chip. That's an easy assumption to make without insider information, but reports have been surfacing that LG is in development of its own top-end chipset. Apparently though, LG will stay in Qualcomm's camp for yet another generation.
The source has been deemed trustworthy, but even if the above is correct at the time of writing, there's no less than 6 months before we get to see the LG G5, so bear in mind that things may change.