The news at the time was that we would be getting "some" additional events. That's all the information we had. Nothing on how much, how often, timeline, etc. It could just as well have been 1 pack for New Years as nothing else, and with the history of Blizz being 2 events per year (Winterveil and Fire Festival) and each of those events giving only a couple packs, people who assumed this (which most people did) would have been fair.
If you're going to be fair, at least try to be factual.