Did no one tell DICE that September 1 is a little crowded this year? Apparently not, as the developer is launching both its significant summer patch and Night Operations maps for Battlefield 4 on that day.
The Night Operations update will be free to download and includes one completely new map called Zavod: Graveyard Shift as well as a night version of the Zavod 311 map. The new night mode will change players' tactics and force them to use tools like night vision and flares that they might have been able to get away with not using in the base game. The summer patch will improve online performance once again, as well as gameplay tweaks such as making tracer bullets less effective.
There's talk of other maps getting night modes as well, but it seems like we'll have to wait until September 1 for the full patch notes.