Thanks for the clarification.
Late 2nd quarter of 2017 was obviously not going to happen, and early 4th quarter still seems like a pretty ambitious timetable considering that the 10.12.6 beta is on the way and no 10.13 betas have been released yet. (I should have realized that late 4th quarter of 2018 was equally unlikely, though.)
Maybe Apple's got a better handle on this version of macOS than on previous versions of their OS? (Or is my timing off again?)
