The Dutch language Wikipedia will be turning 15 in June 2016. The Dutch Chapter, WMNL, will be in charge of the celebrations.
There will not be any special events organised in January, but there is a New Year's meet & drink at Museum Catharijneconvent, Utrecht on Saturday 16 January 2016. During the event we will take a short moment to raise a glass to the 15th birthday of Wikipedia.
The program includes a tour of the museum's highlights, possibly the awards ceremony of the Dutch writing contest, the awards ceremony of the Dutch WikiOwls to projects and users which are most valued by the community. We'll conclude the event with a typically Dutch "borrel" (drinks and chatting). More on the event can be found at the Chapter wiki (page in Dutch): more on the celebrations in June will be announced there too.