According to multiple sources inside and outside the company,
Christie’s exit has been known for weeks — and planned for even
longer. His stepping aside has been designed to allow for a
transition of leadership inside the Human Interface group.
Christie worked under Forstall for many years, and there may have
been plenty of times he didn’t agree with Ive, but there has
reportedly been a distinct lack of drama in this transition.
If there was any ill-will between Christie and Ive, it doesn’t
appear to have taken the form of any open conflict and a flare-up
of friction was apparently not behind this exit.