User blog comment:Staw-Hat Luffy/Future Devil Fruit Powers/@comment-5729687-20121118090039

It has been confirmed that there will be no Water Logia that will be created. As awesome as it sounds but it is not gonna happen.

I do think there will be:

Mythic Zoan: Dragon Dragon Fruit (Possibly Monkey D Dragon)

Paramecia: String String fruit (Possibly Donquixote Doflamingo)

Paramecia: Acid Acid Fruit (Possibly Big Mom)

Paramecia: Tree Tree Fruit (it will be pathetic if it is a logia as it has a tangible form and also trees are life forms)

Logia: Rock Rock Fruit (this is posible to have a logia form kinda like Aokiji's Ice DF)

Zoan: A chameleon DF