At a recent event in Hong Kong, Nokia not only mentioned that Bluetooth 4.0 would be coming to select devices with the Amber update, but also stated that the latter update will improve the 'sharpness' of pictures taken with the Nokia Lumia 920 as well as improve the 'temperature' of colors, speed up focusing time, and keep pictures in the gallery sharp even while zooming in. The update will also bring improved battery life to that model. What is unknown is whether the Nokia Lumia 92x models will also be receiving Bluetooth 4.0 with the Amber update.
Check out the slideshow below to see how the Amber update will improve pictures taken with the Nokia Lumia 920.
Amber update for Nokia Lumia models
source: blogJack (translated) via WMPoweruser