As I have mentioned elsewhere, they have now created hype about when the hype will start. For example, a three page thread by fans about when the hype should start. Precisely what Blizzard wants...
Not sure if complaining about how blizzard does reveals counts as hype? It's at least a buzz. Hype though? I see more trepidation with the cards they actually showed.
"Any publicity is good publicity."
The fact that we're still talking about this expansion isn't going to change their minds. If anything, this just proves that we're getting more angsty to see some cards, which is essentially hype.
Patience is bliss...