There is no rhyme or reason... mine still says TBD on the graphic bar, but changed (since Friday) from 11/29 to 11/19 on the lower left. If I believed it, good news ;)
My dealer got seven Rangers delivered this week, incl. two Tremors. If I wanted Rapid Red I'd be all set, but (at least for now) I'm holding out for Cactus Gray. Told the salesman today if it arrives after the first of the year I might as well get a 2022... and only half joking...
My Lariat Tremor was ordered 6/8; first estimated delivery was 8/28, then changed to 10/31, then 11/29; today it changed to TBD. Not looking good for Christmas...
My Tremor order was accepted June 6; went into production August 3 with an estimated delivery date of August 28. Then a week ago the estimated delivery was changed to October 31. Still a scarcity of chips? No one seems to know...