Umm, it’s a tuff one as chrisk said, all cars ordered are subect to change if the manufacturer decides
Although that means if there are any changesto the specs etc you would of thought you’d of been informed by the dealer and you could cancel your order.
The dealer has the car and surely they knows what it has already and either it is as ordered or they staying quiet, hoping you’ll accept it. Which is a big mistake imo, As if and when you go to collect it it’s will then be registered and then you refuse to enter your pin as it’s not as ordered. It’s their problem.
For me the big issue would be no Adaptive cruise for instance. It all depends on what the options are that not now included.
Only you can decide if you happy with it if it does not.