Johan
Ex got M3 in the divorce, waiting for EU Model Y!
I don't think we should wonder if there will be a small number of "90" cars that are software upgradeable to 100 kWh, we should assume there will be. Look at the history of how they did the step up from 70 --> 75 packs. How to do this without Osborning one self? You use up all your 70 packs and start putting 75 packs in the cars ordered as "70" cars. Then as soon as all the cars with the last actual 70 packs have been delivered or at least 100% payed for you announce the 75 as the new pack. They will do the exact same now with the 90 --> 100 upgrade.