Thus, whatever exactly the OGL v 1.1 looks like, it will not be an "update" within the meaning of section 9 of v 1.0/1.0a.
And "update" has no other legal meaning in this context that I can see.
So trying to argue that v 1.1 will nevertheless, in some sense, be an update strikes me as pointless and even quixotic.
This doesn't stop WotC's media and comms team describing things however they like - but why are you taking their choice of words so seriously if what you're actually trying to do is cut through the comms team's spin and make legal sense of what might actually be happening?