When did you place the order with the dealer, and did they give you a build week? From experience of the majority (well, you could be special and the exception), estimated delivery time, and realistic delivery times are waay different. Me myself in 2016 before all this WLTP business, ordered my car end Aug, claimed delivery in early Nov, got my car, mid Dec. My next car, Volvo V40, ordered early September, claimed delivery end Nov / early Dec. Told the car is already built and on it's way on the ship soon, dealer will hold it for 1.5 months! Maybe it's because yours is Xcellence Lux...well let's see whether it will be congrats, or I told you so at the stated delivery time.
Sometimes the dealer will tell you what ship it's on, and you can track it! That's when you really know it's on it's way!