I'm assuming you mean "I start using this under a free dev license, and want to shift up to the paid production version"? And what that looks like? If that's the case, I don't know yet. That's literally being discussed/hammered as we speak, and we likely won't have a good answer until we're ready to go public preview (not sure on timeline right now, depends heavily on how the tech preview goes). This stage of the game is literally a "We built an awesome thing, please poke at it and tell us where it does/doesn't work!".