Have we ever received an official answer from Tesla, that the current Model S/X Chademo adapter doesn't work BECAUSE -
a) There is a hardware incompatibility, and Model 3 will need a different adapter entirely, or
b) firmware/software issue in the existing adapters. Will need to develop firmware upgrade and install new firmware for existing Chademo adapter to work, or
c) The car itself needs updated firmware, it's in development, and may be available in <insert timeline here> .
The finding that the Chademo adapter is listed in the model 3 service manual, with the same part number , suggests that it could be option B or C. Or it could be simply a cut and paste error.
IMO, it would be good for Tesla to give us some guidance on this.