Movement Types...

What is the difference between "Horse and Foot"?
What does Hover do? And what does "Can Flee" mean?

Hover is the same as foot xcept u can change the flying height property of the unit.

If this is true then units with no attack or the "worker" classification will walk away when they are attacked.

Oh thx, and what about Horse? >>

I believe hover might prevent an unit from setting off goblin land mines and the like, but that might just be memories from starcraft and the spider mines there...

Concerning Horse and Foot, I've never noticed any difference.

Horse gives the unit the horse ambience sound when moving, it also slows down it's turn speed slightly.

Hover allows the unit to move in any given direction no matter what way it's facing and it will turn to face the correct direction while moving (order a unit with hover to walk to a spot behind it and you'll notice it starts moving before it finishes turning, unlike a unit with walk who will turn THEN walk) it also allows you to set flying height, but is still affected by ground pathing. It does not affect mines or anything of the sort.