User blog comment:Xilinoc/Ch. 592 - Marching Out the ZOMBIES 3/@comment-11446176-20140806073523/@comment-11446176-20140807013513

It may not have been proven as fire type yet, but neither has it proven to not be fire type.

It could turn into giant fluffy pillows for all we know, since we basically know nothing, but basing the type of zanpakutou on whatever little has been shown of engetsu at this point is all guesswork, so is there anything wrong with a guess being put up of some fire related weaponary?