I assume it will be released with the release of the public betas, presumably tomorrow. It must have been a serious error, because bugs have all versions, that's why these betas are.Ofc but it can be so simple that they forgot a closing bracket in the code then the code will not pass and maybe they dident have the time to validate the code.
It’s not like some person just can modifying the code.
Every change need to pass trough validations and reviews etc.
It take time, and today someone might be sick
My point is that watchOS did not get released because of something and my guess is that it will get released tomorrow or Friday.