My DS called today and told me, with the standard caveats, that the current production plan is to deliver the Colorado bound Signatures the last week of November / first week of December. My RN is in 1300s and my VIN is in the 300s.
He also said that the first vehicles are taking 6-8 weeks in production as they work out the process, but by mid-November the plan is for that to be brought down to 4 weeks.
It would seem like they are at least batching by location if not other criteria as well.