(I love speculative fanart. So sue me!)
Don't remember exactly where it was mentioned, but there were rumors for KH2: Final Mix about their being a new drive form. And of course this gets me thinking, "What would the new drive form possibly be?" Maybe something like Antiform...except with Nobody powers instead of Heartless. Unform!
That, and I realized I hadn't drawn Antiform before, which shocked me because I totally fangirl it. *hearts on Antiform*
Edit, because people keep commenting so: Yes, I DO KNOW that his new drive form is actually Limit Form, and it's his clothes from KH1. This was drawn before any of that info was released. Please make sure and read descriptions!