I spoke with Kodak today. Here is the quick version of my report:

There is plenty of Azo on hand. No one needs to panic.

A few years ago Paula and I saved Azo from extinction. We didn't do this just to get everyone excited about silver chloride paper and then leave them in the lurch. So we are having silver chloride paper made elsewhere. There will be silver chloride paper available as long as we are around.