Hi ManintheBack - I'm in same situation. No matter what you ask them - they won't say anything except the new policy will apply to all passengers.
I agree it may not be legal with those holding ticketed reservations, but if you look further back in this thread you will see something which is along the lines of carrying your baggage free of charge,
subject to the terms and conditions which exist at the time of travel. Something like that. As others have said on this and other sites, this has not been worded the best and may or may not be a get out clause for them. It'd be interesting to hear if any legal bods have any viewpoint.