I don't know where JayzTwoCents got the October 7th rumor from and I've been following these leaks pretty closely. It must have been a date given to him by his AMD contact that he was allowed to share to spark interest.
There is no reason to think Igor's leak of no AIB cards is false as he has really been accurate from what I can tell in the past. I think AMD did have the AIB cards planned for October but Covid probably messed that up and the only thing they could rely on was their own production. I also think AMD got annoyed that their XT launch was just forgotten about after 2 days and they don't want that to happen again.
Based on everything said so far this is how I see it going that maximizes AMD's coverage:
In a week or so we have a tweet from AMD saying "something big is coming" to hold people off buying 3000 series. Live stream announcement on October 7th by Lisa talking about Zen 3 and RDNA 2. Since Igor again stated Zen 3 mass production is happening now we can expect Lisa to say a Zen 3 launch on October 21st. I then expect November 7th for a proper RDNA 2 launch. The RDNA 2 launch in November gets them another 2-3 weeks of reviews and benchmark coverage. In total a good 6 weeks of constant news coverage and videos. Not too shabby. This still fulfills the promise that we would see RDNA 2 GPUs before the consoles and conveniently late November will be the console launch. If AMD play it well they can have themselves constantly in every news site for 2 straight months.
I get that mass production might still be a bit behind, but why do they have to hold their live stream or announcement so late? Why not move it forwards and present us with the facts re: performance of their cards and pricing?
Its a confusing time. NVIDIA's competitive pricing points towards AMD might have something competitive. But AMD's silence on the matter makes it seem as if they'll likely take beating the 3070 at a marginally cheaper price point as a resounding victory (which I thinkf or most high end users will not be enough.