What Harman/Ilford is doing is different. Their sheet films are all in regular production. All that they are doing in the special order period is changing the cutting masks to allow them to cut different sheet sizes from the master rolls that they are already producing.
Restarting coating of an emulsion that has been out of production is a more difficult and expensive proposition. That doesn't mean it's impossible, but at the least the logistical and cost hurdles are going to be higher.
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