User blog comment:Kogath/Monster Hunter 4 Ultimate for the Nintendo 3DS/@comment-4563270-20140716015736/@comment-184612-20140716020134

I posted this before, but stuff got buried in posts;

Charge Blade Changes

In Blade mode you can now do a shield bash (does cut damage due to the shields being bladed), which can also combo into the the big Elemental Burst attack. This change makes it so now the Elemental Burst can be used in both Blade and Axe modes.

The Elemental Burst can also now be canceled out of, which will put you back in Blade mode. Doing so will transfer the energy to your shield and a red shield icon will appear next to your Sharpness bar.

This new state is called Elemental Power Up (属性強化状態). Certain moves will be powered up in this state, and the Elemental Burst will use all your phials as well as the charge in your shield to unleash a devastating attack.