JuicieJ
SHOW ME YA MOVES!
I also think the unknown item is the redisigned item.
Anyway, according to the last Iwata asks, the 8 equipable items that have been shown are also the ONLY equipable items in the game. So no more items we haven't seen...
That makes me wonder how that Deku Nut-looking item will work if they're not Slingshot pellets (which I'm almost certain they're not).