To sum up the blue posts on the subject.
310% training is going to be available to everyone. Get use to it. It will most likely be a gold sink, aka you people are dreaming if you think 3k will get it. I'd expect 20k minimum like the Vendor Mount. This is a LUXURY item. You do not need it and not being able to fly 30% faster will not in anyway prevent you from fully experiencing the game.
People who have a 310 mount once this change goes into place will be granted the skill. Congratulations to those who have one already, you've saved a good amount of gold on that character.
You will most likely be able to fly right away in Cataclysm.
All of this can be found in blue statements, go look it up.