I know here in Halifax some of the Micros will be adjusting their hops. The other thing they are saying is they will not be formulating any new recipes until the shortage has been alleviated. It will likley be different for each brewer.
My main place, Golden Valley, probably won't change. Mark isn't into mega-hopped IPAs. Might impact his holiday Brut, although I suspect he brewed that a few months ago.