I downloaded and tested DCS 2.8 today.
Did a cold and dark Spitfire mission on the Channel map and I could swear I heard an owl hooting… Wait a minute! That was a howling wolf, too! Then I tested a Viggen mission in the Caucasus. All the taxiway lights had turned into pumpkin lanterns!
It’s still visible today but will be disabled tomorrow. It’s based on the system date though so it will still be possible to see it if you change yours