Flights may not appear on the KLM online timetable but they are bookable (as Manchester's flights are ) to the end of July 2010.
I fully expect KLM are in this for the long haul - pun intended. They launched the service in the teeth of the worst recession in over 30 years and I imagine they were savvy enough to appreciate that a) initial loads might be affected by this and b) those loads might come at the expense of their existing Manchester service - which may require "surgery" itself.