2015 X1, 2017 BRZ
I've been keeping an eye out, and it looks like these just became available yesterday or today. Should be a big relief for anyone with the 20's.
Also this winter - Michelin's Pilot Sport EV SUV tire should arrive in the USA in 20" sizes to fit the XC40 P8. It's a low-rolling-resistance tire that should give about 10% more EV range than either conventional tire shown.