You do understand that last Thursday was a major holiday here in the US, and because of that, they likely took Friday off as well?
Meaning - any development and testing (giggle) that goes into the patch that would normally be done on Friday had to be done on Monday, and then fixes applied Tuesday for a Wednesday patch?
Yeah, everyone understands that and everyone also understands that their patch days have been irregular more than just this time. Players want to be able to count on which day is patch day for raiding, days off work, etc. It is by no means an unreasonable request. WoW has done it forever, it isn't difficult.