I don't think there is anything more than a coincidental relationship between build number and actual build date, more or less. Sequence seems more dependent on option/parts availability, and who knows what else.
In any event, I was told yesterday that #84100, which was scheduled for build slot week 7, has still not started, but hopefully next week will begin build. Then it takes about a week to 10 days to complete from what I'm told.
