The heat treat for the new production, including the GSO-5.1 and all runs after it, is the best CPM-3V heat treat available on a large scale at this time. Those blades should have the same corrosion resistance as the top knife in that instagram post.
Our current production heat treat protocol is in the same direction but still different from what Nathan has been working on. If his process can be scaled up for full production runs we will probably start doing that, as soon as we can be sure the result will be consistent. Depending on how that affects the cost, it may be something that is only available through that super custom series I have been hinting at lately. If it can't be done on a large scale then maybe we will still offer it in the super custom series, for a price. It is all in the air right now so we will have to just wait and see.
Edit to add: It will probably end up with a special name to help avoid any confusion in the future.