Liebe D-CONler / Dear Concurrency Theorerists! The next edition of D-CON will take place in Darmstadt on March 1st - March 2nd, 2018. Please save this date in your calender. As usual, we start at the morning of the first day and end after lunch time of the second day. A preliminary web page can be found under: http://www.es.tu-darmstadt.de/d-con-2018/ If you would like to present your most recent work, organize a breackout session, a tutorial or whatever, you can already let me know. In addition, there will be a further call for contributions later on this year. We are looking forward to seeing you all at D-CON 2018! Malte, Geza, Lars, Stephan