As if we didn't hate Fox in Smash Bros. enough, we now learn the guy's Final Smash has him piloting a huge tank. You should be familiar with the tank's arsenal of maneuvers, including hovering, doing barrel rolls and firing large bursts from its cannon. Seriously, it looks like too good of a Final Smash. Fox gets that much cheaper, we suppose.
The other half of the update deals with shielding and dodging. Dodging will allow you to perform backflips and sidesteps, even rolling to your opponent's back, to get your character out of danger and find your opponent surprised and vulnerable.
Read - Shielding and Dodging
Read - Fox Final Smash