Thanks guys!
I did a little digging - the trailer hitch pre-wiring is option code S8SL - "Trailer Coupling Preparation". Any online vin decoder should tell you if the car has it. I ran the vins of two 2022s for sale locally and sure enough, both had the option. So, running the factory retrofit harness/module should be plug and play just like on my 2020.
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-2007 Z4M - Interlagos Blue
-2008 E90 M3 - Interlagos Blue, 6MT, slicktop
-2020 X3MC - Phytonic Blue
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