Very curious. 85D orders have been being pushed back pretty much every week due to supposed part issues (at least that's what my DS keeps telling me). But I don't think part issues would delay cars that were already in production, I'd expect them to just not start those cars.
My 85D went into production this past Saturday but the estimated delivery has stayed at Late February. The strange thing about this is when my end of line date was Jan 26th I had a estimated delivery of February. But now my car is showing in production earlier than that and it still is showing Late February. One theory I have is that the estimated dates only update once a week on Wednesday night. If not then possibly they've changed how they're showing In Production or the rate of production has slowed down for some unknown reason. I guess I'll know sometime late tomorrow night or Thursday morning if my Estimated Delivery changes.
I'd imagine that production is a tad slower this month due to giving employees a break after the push to get December P85D deliveries out. But I can't see that delaying things as much as you guys are reporting.
Have you guys asked your DS about the delays? They might tell you they don't know but you can ask them to research the issue (i.e. ask the factory what's going on), though from what I understand it takes 5-7 days to get a response back on that.