Board Thread:Questions and Answers/@comment-10797017-20130622101437/@comment-11051098-20130623135923

My guess for the new Bankai is one of these:

- improved version of the Shikai, connecting the blades with an extendable chain that allows the short one to be used as a ranged weapon + defense, while the long one has offensive techniques like Getsuga Tenshô

- single blade with techniques like Getsuga Tenshô + an extendable chain connected to the hilt allowing him to use it as a ranged weapon (imagine old Bankai with more techniques + longer, extendable chain)