In the new sequel trailer to Legend Of Zelda Breath Of The Wild we saw a mummified looking corpse in the middle of what looks like a containment spell. To me this looks like Ganon but the more I think about it the less it makes sense. Why would Nintendo purposely say that Ganon was forever defeated and then bring him back. Then again Nintendo has pulled stunts like this before so it wouldn't surprise me if it was Ganon or maybe even a new boss.