To try to upsell people by only talking about the high end stuff first - NV have done this a few times. The 1080 gets all the press until it's available to buy, then it's the 1070 that gets talked about and so on. Who knows if the lower cards are ready yet or not at this point, but that's why the launch was the way it was.
I agree with you, hence I asked him to explain his comment since if GP106 is ready why not release it?
Especially considering earlier comments about how if P10 is ready AMD should release it right now instead of waiting, if GP106 is ready Nvidia should release it now instead of waiting...