That's less a versioning of software and more a versioning of AI's role in software. None -> Partial -> Total. Its a valid scale with regard to AI's role specifically, but I think Karpathy was intending to make a point about software as a whole, and even the details of how that middle "Partial" era evolves.
What are some predictions people are anticipating for V4?
My Hail Mary is it’s going to be groups of machines gathering real world data, creating their own protocols or forms of language isolated to their own systems in order to optimize that particular system’s workflow and data storage.
V1.0: describing solutions to specific problems directly, precisely, for machines to execute.
V2.0: giving machine examples of good and bad answers to specific problems we don't know how to describe precisely, for machine to generalize from and solve such indirectly specified problem.
V3.0: telling machine what to do in plain language, for it to figure out and solve.
V2 was coded in V1 style, as a solution to problem of "build a tool that can solve problems defined as examples". V3 was created by feeding everything and the kitchen sink into V2 at the same time, so it learns to solve the problem of being general-purpose tool.