Yep, 22s can be had I'm Chicago as well. Debating if it would be worth trying to trade in one of the 19s for a 22 given the higher price in the used car market. The 21/22 model year has improved safety equipment for the S+.
Is there any analysis out there as to whether there is any difference in battery degradation between 18, 19, 20, and 21s? 40 or 62.