Having said all this some of us were wavered from our 5 year freeze this year,
Another example of the truth of the old adage that gets trotted out at annual bid time of "always bid what you want, regardless of any freezes, never bid for something you don't want".
I suspect (as possibly has happened to Sinbin ) I benefited from being at the front end of a recruitment bulge and other peoples inertia. Less than 2 years into BA I escaped from the 747 Classic fleet to a new but initially unpopular fleet
. Others just senior to me delayed bidding off by a year and ended up stuck on a fleet with a deteriorating lifestyle for over a decade, or went to shorthaul......
In a nutshell assume freezes will be applied, and also assume that if you are junior and are trying to bid off an unpopular fleet and on to a popular fleet(s) you're going to struggle to move, regardless of being out of freeze.... but always bid.