I read that in the comments of this video:
http://www.eurogamer.net/videos/new-...age-1#comments
Comment #15:
"Having played the demo at the Eurogamer Expo, I can report that the flying was just as terrible as the flying levels in Mario Galaxy 2, but the ground-level stuff is just as good as you hope. This looks epic."
And the sword thing I think I read in the comments of Kotaku's "The first two dreamy hours of Skyward Sword" or so.