https://videocardz.com/newz/reviewer-claims-amd-delayed-ryzen-7000-launch-by-two-weeks-due-to-bios-related-issues
 
Yesterday AMD officially confirmed Ryzen 7000 announcement on August 29th. This livestreamed event should provide the most important information on next-gen CPU series, such as SKU specs and pricing. However, actual launch (including sales and reviews) is not expected until another month. One might say that there is no delay because AMD never confirmed the launch date of September 15th, however multiple sources, including reviewers, board makers and even AMD themselves during an internal meeting with partners have mentioned this date. One of the reviewers from Chiphell has just confirmed on their forums that they were informed about the NDA change and postponed launch. Interestingly, according to this information AMD is still working on a BIOS which might have been the reason for the delay.
 
Given that the launch was delayed before AMD announced “Next Generation Ryzen” announcement, gives hope that those BIOS issues are not serious, and it is mainly due to optimizations. After all, socket AM5 will be the first consumer platform supporting DDR5 memory and PCIe Gen5 on storage and GPUs, so there is definitely a lot to test. Rumors suggest AMD will launch their Ryzen 7000 CPUs on September 27th, the same day Intel introduces its 13th Gen Core Raptor Lake-S desktop CPUs.
 
This is going to be an interesting launch. I still don't know if the September 27 launch date was due to marketing or this BIOs change. 

CraptacularOne
Lots of things could go wrong here and there will certainly be growing pains as they transition to their first LGA socket type for the mainstream market and also have to hash out their DDR5 support and the reportedly higher FClock. AMD seems to be aiming to run their memory controllers 1:1 with the base memory clock instead of the default 1:2 that intel opted for with DDR5. They will almost certainly have to run asynchronous at some point beyond 3000Mhz as DDR5 continues to get faster I wonder how far the FClock can go to keep up 1:1. 

An interesting observation. I have 5200 MHZ DDR5 just sitting around waiting for Zen 4 but maybe I should buy some 6000 MHZ or higher memory.
 

Looks like I'll be buying some Corsair memory soon.