I can't say I've heard it, but it wouldn't be tremendously surprising. We know Cork-Newcastle is gone. Drop the third rotation from Cork to Manchester on those days where there is one and cut Shannon operations where it's operated as a W from Cork (or alternatively operate them as a W from Dublin) and there's no need for a third aircraft in Cork. It could be a big saving for not too much pain.
I would be surprised if this happened high loads and very high prices too