After announcement from the Vereinigung Cockpit pilots’ union that they will boycott the long-haul flights from Frankfurt on September 16th, Lufthansa published a special flight plan this afternoon. The plan is for all 40 long-haul flights scheduled to depart during the strike to take place. It is thus expected that the strike will not lead to any flight cancellations, rather just to a change in the departure times of 24 long-haul flights from Frankfurt.
Read more at http://www.lufthansa.com/de/en/Travel-information