Dealer updated my EX-L via a USB stick to see if that would eliminate the flashing/going blank issue. No dice. Next they want to replace the entire display, but they say it is backordered, and they have absolutely no idea when it will be in stock. Anyone else have a similar issue?
Generally, Honda should be able to get a firm estimate on a backordered OEM part. The problem with this particular part is it is actually a Mitsubishi part that Honda specified and integrared into their gen5 platform... so it could be that Mitsubishi is backordered and not being transparent to Honda dealers.
There is also some signs in discussions over the last year that Mitsubishi is also playing games with supplies to Honda, trying to stall and delay to try to inhibit warranty returns and replacements.
So.. who knows for sure.
If it were me, I would follow the advice above about polling a different dealer, and failing that.. I would reach out directly to Honda Corporate.