Today the city announced which coffeeshops will be closed and when they have to close:
http://www.at5.nl/artikelen/115601/the- ... og-in-2016It's in Dutch, but I guess the names and dates speak for themselves.
All the shops in that list have to change their opening times as well. Starting the 1st of january 2014 until they have to close the opening times are restricted on mon-friday from 18:00 till 01:00. In weekends and schoolholidays the normal opening times apply.