Regional MPs are standing in for elections in June. Airport noise is their favorite red-herring issue. Brings them lots of attention, plenty of people in favor of eliminating as much of it as possible, and yet it's a federal mandate, so their pre-election promises to do something about it is like a 747-200 taking off over Zaventem. Very noisy, but it goes away.
The only sure things are a night-time ops ban is being phased in progressively for three nights a week, and whatever new regulation they may actually come up with will mean absolutely nothing and be enforced at will by whatever idiot is in charge, the current one applying existing regulations based on where his friends live (seriously).