It would be all the pilots being told and cabin crew not only 777 and 350 pilots as the contracts stipulate a Seniority system for promotion and redundancy, I.e the longer you have been there then you get promoted to Captain first and vice versa you get laid off last.

Doesn't matter what you fly, the company will just have to retrain whomever is left to fly whatever aircraft they have in the fleet. All being equal I am sure that everything possible will be done from both management and the unions to avoid redundancies. It is not a good time for anyone right now and let's hope that things pick up soon.