Closely analyzing that post I noticed that the Armory system and Job system are separated. He didn't just say "We will present info on our new Armory system." That has me hoping he chose an idea similar to Carpe and you. That would be the best way to enhance and complete the missing half of our current system. The other ideas kinda drowned out our current classes by just turning them into a job.
Here's hoping I didn't over-analyze the situation! It doesn't have to be exactly but would be cool if he used the core idea.