To be more clear: my comment about not giving exact dates was about work in general, where you don't want to promise something unless, like Nuggets has said, you're really sure you can deliver on that date. It's about avoiding empty promises. Obviously it has little to no bearing on a timed assignment that happens in regular intervals, such as the Weekly Post, but that still needed to be said regarding other work.
The weekly post was never designed to be every 7 exact days, but you were given a promise of 1 every week with the most rare exception, and I haven't lived up to that yet - I am sorry for that. The general consistency of weekly posts is up to me to vastly improve. I'll make sure I have extra subjects ready in advance so there is virtually no need for a bottleneck (game design bottlenecks do suck).
You have no one to blame on the team for this except me, frankly. I apologized, and have made sure this won't happen again barring a given emergency, in which case the turnaround time will be a lot faster and with delegation.