Board Thread:Spoilers!/@comment-26443838-20160203031256/@comment-24674051-20160419171947

I think sometimes, they withhold the press release when there may be something extra spoilery revealed. Where as they might release a press announcement early if they want to particularly hype up a particular episode. (and that's not just Once, imo, that's TV in general).

Of course, they could just be getting sloppy.