I'm surprised no one has mentioned the advantages of built in wifi for videographers. We fly a 60D on a crane sometimes and being able to see what I'm recording wirelessly on any of my pocketable screens, or even a tablet will be ground breaking for that kind of work. Or how about those shots where the camera is hidden? I've done a shot with a dslr that was inside a fridge and though its a rare shot, the convenience of less takes is always welcome. Directing via cell phone? Man... I'm betting anything the magic lantern guys are already thinking of ways to play with the wifi function.
It would have been great for videographers only wifi doesn't work in video mode.!!
maybe ML will fix this in the near future