Ok, I phoned Canon in Sweden and asked. They thought about it a few minutes and asked around, but noone was 100% sure, but anyway they said that it should work, and if it does not auto-focus during the filming it should be returned on warranty cause that should work (even though they at the same time sounded a bit unsure/confused lol).
But I guess it DOES auto-fokus, cause if not it wouldn't be very useful now would it
If any of you guys would like to confirm it 100% with your own camera I would still be happy. Think I'll wait a few days more anyway with my order...have to think about investments this big.