New model shown below. They have been updating the movements as they come in for service. Also, I have not heard of issues or experienced any myself. Two weeks ago I visited the Zeitwerk department and had the opportunity to talk to some of the watchmakers. He said that the older movements cannot be updated fully as the changes are to big. The new movement arms the remontoire 30 sec prior to the jump. This is not visible from the front, so no prejump.
