Our top priority is to provide the best possible experience for customers in maintaining and protecting their systems. This month, we discovered a last minute issue that could impact some customers and was not resolved in time for our planned updates today.
After considering all options, we made the decision to delay this month’s updates. We apologize for any inconvenience caused by this change to the existing plan.
I'm pretty sure this has never happened before as I cannot recall a time when Microsoft has NOT released updates on Patch Tuesday.