Well, it's obvious none of you have ever studied/worked in marketing. In order to create a buzz about something, you toss little snippets out at a time. That's what they're doing with the next installment of Batman. "The Dark Knight" is being put forward with a series of cryptic messages and little bits and pieces of info. The reason they do this is to A) create a buzz B) the movie wouldn't be fun for you if they were to release the whole plot, complete with spoilers, and all.
As for the people who feel they've been "talked down to" by the game design team in the D&D Insider/R&D Blogs and such, I have this to say: you're either very insecure in yourself if you feel that a game design crew that hasn't ever met you, and who in all likelihood talk like anyone else, are talking down to you, or you are reading too much into what they are saying. These are just people expressing how they feel about their jobs, the project they're working on, and what they're thinking about. They are not trying to act better than you.
As for those who think tieflings and warlocks are somehow bastardizing the game, allow me to put it this way: tieflings have been around since 2nd edition. Warlocks may have only shown up really in 3rd edition, but look at those class kits back in 2nd edition. Wild mages and such? Come on! Warlocks are just another alternative kit for magic-users. The people who complain about warlocks are probably the same people who whined about sorcerers when 3e came out.
Finally, I wonder about these people who claim that WotC lied to them or that WotC is a criminal corporation attempting to gouge/nickle & dime them out of their "hard-earned money". I don't recall Wizards of the Coast ever coming out and specifically telling me "Hey! We're not planning any new products." Also, it's been almost 9 years since they released 3e. I remember it vividly. There is a new edition of the game roughly every 8-10 years, so quit complaining about that (2nd ed. had how many revised books?). If you haven't made around $120 of spare cash in 9 years, you're probably impoverished and shouldn't be spending your leisure time playing games.
P.S.: For the people who complain about the so-called "sacred cows" of D&D being changed/done differently, etc., let me say this: Some cows need to have medicine or they will die. Some cows get old and sick and they need to die.