The 900 koroks thing seems pretty bonkers. Can't speak for everyone here, but I've never been able to handle the collectathon style gameplay. The 96 sidequests number does interest me, so we can only hope they're sidequests with substance (Witcher 3) and not go-here-fetch-this (Final Fantasy XV).
It doesn't justify the Switch's ****ty launch line-up. Breath of the Wild may wind up being great, but it will be the only great thing available for the system.