Looks like AMD saw Intel and is trying to capitalize and learn from Intel’s mistake by delaying until they can guarantee a stable launch
Personally I see this as a win for consumers as you’re more likely to get a higher quality product by either company (AMD’s move here is likely to echo in Intel)
The new launch will be right in the middle of Intels proposed fix, so will still be able to cash in on the troubles Intel is facing (especially if it doesn’t work right away), while making sure AMD processors don’t have a similar fatal flaw. Nothing would be worse than swooping in to take over the share of consumers trying to leave Intel, only to run into their own stability issues.