From a friend-of-the-blog:
What do you think about the theory that Tim is taking it back to Steve’s years?
Steve Jobs used to sandbag quarterly guidance and then report eye-popping blowout surprises. (OK, it was an era of explosive unit growth.)
But why not sandbag guidance for fiscal Q1 2019 when you are entering a new era of reporting? Why not give yourself a bit of cushion for reporting the numbers the new way, and get people sold on the rationale of doing that at first try, the first quarter of the new reporting standard.
After all, you don’t want to struggle in that first moment of change when you told people abruptly on that strange conference call (indeed) that the new way was the better way.
My take: Makes sense to me.