I got my snailmail (usps) letter today RE the fuel pump impeller. It makes for odd reading. It says "Due to limited supply of parts, at this time Honda is prioritizing the repair of vehicles experiencing symptoms..." We've waited months since original HondaLink notification, and now the physical letter came in the mail, but with the notice that unless you have the issue you may not get service. I called my dealer's repair area. They indicate Honda has been sending them a small number of parts, but wouldn't say if I could have one. They asked me to call back in a month or two, which is the same I was told by them when originally notified via HondaLink.
Edit/add: I read the letter carefully, and it *does* say i will be notified by another letter once I can have the service. I was initially confused as I figured once I got the USPS notification I could get the part.