The letter from Yamaha N.A. states that the letters to owners and technical bulletin to shops should go out on January 28th.
https://nhthqnwws111.odi.nhtsa.dot.gov/acms...09V002-7020.pdf
Many thanks to those of you who made the effort to report failures. So far, I've been lucky, but I do carry both a jumper mod and a spare ignition with me at all times.
It is possible for the dealer to re-key the new ignition to match the old one (and rest of the bike). I intend to make sure that's part of the plan before I have mine swapped out.