It's been since June that they announced that you'll be able to see (and upload) videos at 60 fps but now, it's a reallity \o/ Right now, it's only possible if you're using Chrome (Safari seem to work as well) but it'll be possible for everyone soon \o/ Saddly, it doesn't work when i tried to post some videos on the forum (couldn't get to choose those glorious 1080p 60 fps) so here's the link of some videos with the 60 fps https://www.youtube.com/watch?v=_zPm3SSj6W8 https://www.youtube.com/watch?v=T3ny9zIckP0 https://www.youtube.com/watch?v=aZpop1qYc6Y
You can get it to work in Firefox (and Safari works the same way I believe) by going to this site here and activating the HTML5-Player in your browser.