If true, I'd piss my pants. But it sounds too good to be true, so it's not.
The thing that's definitely bull is the multiplayer part; not going to happen. Would be pretty stupid and useless anyway, the way it's described here at least.
Also, I don't get the hate the OoT Water Temple continues to get... Is it really that hard? I know Miyamoto once said that like 70% of the players couldn't beat this dungeon which was why they made it easier in the 3DS version, but I found it to be one of most inspired dungeons in the whole series. Except the boss, Morpha's kinda lame.







