The question of will there be scares is more of a question of will there be things WHOSE PURPOSE is to scare? It's more like a question of whether you think Redeads, Gibdos, etc. (fear-based) will be included in the game regardless of if they scare YOU or not.
Anyway, I think it will be quite weird if they didn't include enemies whose purpose is to invoke fear, as this kind of enemy is such a staple in the Zelda series. The excuse that Skyward Sword's graphics might make fear-based enemies less scary (or NOT scary at all) is quite stale. You can't speak for everyone, and assume everyone won't be scared or even a little startled. Wind Waker's graphics didn't seem to prohibit the fear-factor of its Redeads, despite of its graphics being considered "too cartoony" and "whimsical" by MANY, IMO.
Anyway, I think it will be quite weird if they didn't include enemies whose purpose is to invoke fear, as this kind of enemy is such a staple in the Zelda series. The excuse that Skyward Sword's graphics might make fear-based enemies less scary (or NOT scary at all) is quite stale. You can't speak for everyone, and assume everyone won't be scared or even a little startled. Wind Waker's graphics didn't seem to prohibit the fear-factor of its Redeads, despite of its graphics being considered "too cartoony" and "whimsical" by MANY, IMO.