Lighting was improved since 4.09, period. In my opinion the nights are way too bright. Unless you are under cloud cover you can always spot planes from miles away. I liked the possibility of completely black nights in 4.10. I think they should be like they were in 4.10 again.
Same day, same place, different game versions
4.10:
http://www.mediafire.com/view/j447fw...september.jpg#
4.13:
http://www.mediafire.com/view/yc18h5...september.jpg#
for me 4.10 looks way more like a night.