For all but a couple years of my adult life I worked in sales, service and parts dealerships. Primarily farm tractor dealerships. Every time the company introduced a totally new model, to maintain company warranty status…. We were required to:
Send mechanics for training, at our expense
Required to purchase any special tools needed, also our expense.
Had a list of required parts to stock
Had a highly recommend list to stock
Had a list of “you might want these too.”
None of this was inexpensive. All of it had to be met before the company would let us put the new model on the lot for sale.