Careful comparison of the "chapter progress" section (top left) of the newest roadmap
to the one of exactly one month ago shows that only one item has changed - Chapter 4's phase 4 has been pushed out from Q4 2019 to Q1 2020.
Imagine the
precision estimating and planning that went into that adjustment! Having carefully considered the entire S42 plan for 2019 they were able to confirm that
absolutely everything was on track! Except for some dependency somewhere that extended Chapter 4 phase 3 - so that phase 4 had to be pushed out a quarter - nevertheless, they were also able to confirm that notwithstanding that delay they'd be able to make up some time on certain other tasks and still complete Chapter 4 in Q2 2020 with everything else.
Amazing software engineering on display! As a long time software developer myself (over 40 years and still going strong) I bow in awe at this demonstration of management prowess!