I like white bikes, but don't like the black panel (where the knee grips should be) on the 14 model (the only difference to the 15 models is the colour) white ZE I'm buying, so I've had my old tank transferred to the new bike.
It's exactly the same and as they had to change over the locking petrol cap so that my new ignition key would fit, your tank bag will fit perfectly.
Mike