Maybe a hint in this video regarding DDR4 vs DDR5, came out like an hour ago the video.
Happy to see you picked up on that comment "Hold off on Motherboard/Ram purchase' comment", that's why I added a direct link to the tweet.
I think 4th November there will be some happy people on their preorders and some not so happy. We have to wait and see so don't panic, worst case you can cancel the order if not sent out or refuse delivery so it gets sent back and get a refund.
I hope they have done something good Intel this time and puts a bit of pressure on AMD too and then AMD puts pressure back on them, so overall the consumer wins and we get better tech for the money.