when entertainment weekly did a fall movie report on revolutions this bit was said in it...."the fight that the brothers have aptly named the 'super brawl' is a fight that takes place both in the skies above the matrix and down on the ground".....if that isnt enough confirmation that smith flies then i dont know what is. also, in cinema magazine, they did a behind the scenes thing on both reloaded and revolutions and one thing that they asked the visual effects people was what the hardest deffect was, and they said..."making realistic flying. For about a week, we had HUGO and keanu fight in wires above a green screen that took a lot of time and a lot of work" another confirmation