I'm not saying it's entirely settled in my mind, but from what Oxide has said and the way all the data is going coupled with Nvidia's pointed silence, it seems far more likely to be true at this point. If not, Nvidia should probably say something sooner than later.
Or they just want to let the games do the talking. If this true it's a smart play. I think you are going to see other games are not as reliant on async compute.