Today I was going to System Properties with Win+Break and accidentally pressed Win+Print Screen. By doing this, Windows 8 RTM x86 lowered the display brightness for 2 seconds and then returned to normal.
I checked that the printscreen was copied to clipboard by pasting it on Paint, but I didn't notice any difference from a normal printscreen (by pressing only Print Screen button). I also checked that Windows 7 doesn't have the same behavior.
So, is this just a new "animation" for the printscreen process on Windows 8, or does it actually have a functional difference from the traditional method?