A published report on Friday compared pictures taken by a Nokia Lumia 925 before and after the update. And the bottom line is that colors appear to be more accurately reproduced after the update.
We've included some of the comparisons in the slideshow below. Compare the pictures taken before ("Amber") and after ("Black") the installation of the update. Keep in mind that the Nokia Lumia 925 offers a PureView camera and you might not see results like this with all Lumia phones after the update. Whether you have an eye for photography or not, your comments are welcome just the same.
Comparison of pictures taken with a Nokia Lumia 925 before and after the Lumia Black update
source: AAWP via WMPoweruser