Having just returned from AZ towing my 5th wheel, I called my local dealer yesterday to schedule the water pump recall.
They said they have plenty of pumps and scheduled me for Monday morning, 4/23.
I do live in a large metro area so maybe that's the difference.
Mine needs replaced and my dealer didn't have any. They told me they placed an order for one for me and will call me when it gets it. I live in the DC/Baltimore/Northern VA area... a pretty large market, and still back ordered.
On the other hand, my friend lives in a smaller city about an hour north of me and got his replaced last week without problem.