The basic theory without going too in-depth is that cataclysm fights are going to be a lot more movement based.
Why do I suspect this?
1.Time Warp - It also temporarily increases the mage's own movement speed.
2.Stampeding Roar - increasing the movement of all allies within 10 yards by 40% for 8 seconds
3.Spiritwalker's Grace - your spells are no longer interrupted by movement and possibly even by your own attacks.
ect ect.
Basically every class has some sort of "Movement" based spell.
Foreshadowing? or Paranoia? [size=10pt]You[/size] decide.