my latest math is that the effective cost of the 75D has actually gone down by 1,500. Would love someone with a full data set that can validate. If that's the case, seems the right thing to do would be to allow the 70D owner to upgrade to 75D for 15K or to do it as a complimentary service. I would sign up for that under either scenario.
The base price of the 70D before today was $76,500 and the 70 was $71,500. The new prices are $66,000 and $71,000. So they lowered the price $5500 for the base car and upped the option by $5500, so it's a push. Maybe they are trying to make the base car more affordable for prospective Model 3 owners who are trying to stretch to a Model S now?