They always update their newer phones first. They're charging hundreds for the turbo and it's their new flagship. The latest Galaxy S always gets an update first, the latest htc one, the latest Samsung note, the latest LG phone, etc.
Last year the Droid Maxx got KitKat in December / January, the older Razr Maxx HD and Razr m got it in may.
I suppose there's a chance that they do them at the same time but I doubt it. It's just the way it is.