Nord have recently announced a new OS update for Nord Electro 6 and Nord Piano 4. It includes support for their new Enhanced Electric Piano library (V6) and EP filters, as well as a new Soft Filter for Acoustic Pianos.
More information on the Enhanced EP library can be found here.
It is important to note that Nord Piano 4 and Electro 6 users must download the latest version of Nord Sound Manager in order to transfer the Enhanced EP Library to their instrument. You can download Nord Sound Manager 7.40 here.
Download and view Update History here: