This is actually pretty amazing. Hopefully they have varied demos indeed, so we get a better look at gameplay! If that's the case, I hope the E3 trailer is focused on the game's story... just like Skyward Sword had one.
Bet with Teeqoz for 2 weeks of avatar and sig control that Super Mario Odyssey would ship more than 7m on its first 2 months. The game shipped 9.07m, so I won