The build week will change in the first few months after ordering so maybe your dealer is waiting until it locks in on a specific week to notify you, but if you look through the previous 57 pages of this thread, you’ll see that a lot of Skoda dealers are less than forthcoming with updates. Your Motability account won’t update again until there is a date for you to collect the car from the dealer. There is however, no harm in giving them a call in the morning and asking for an update.
If mine is delivered as expected I’d be looking about 6 or 7 months from order to delivery.