As an explanation for non-germans: Berlin is supposed to get a new airport, the BER, but the project is massively mismanaged, and already way over schedule and budget. Recently, for the first time, a schedule for completion has been released. This site provides a way to track the progress made on this schedule.
[1] http://www.bertrug.de/Geplante_Inbetriebnahmen_Flughafen_BER