Where did you hear about this? Dare I say that when BA presents a new fleet to be introduced at LHR there will be another ballot for a strike. BA only has themselves to blame.
I doubt it, MissM.
When Bassa call their ill judged strike (I have no doubt that there'll be enough of you with sufficient bravado to tick the 'yes' box) and it crumbles within 24 hours, part of the deal will be a 'no strike' clause about New Fleet.
Then you'll wish you settled for a decent deal when you had the chance.