Personally, I'm not even considering any pre-ordering until there's an official release date from Blizzard. How about you guys? Are any of you actually going to bother pre-ordering the game this early from one of those random web sites?"As always, unless it is officially announced by us, usually through a press release, any release dates are purely guesses made up by the retailer. I don't pretend to know every retailer's pre-order requirements or rules, but I believe a release date usually has to be present for them to begin taking pre-orders. So they sort of make one up.
That isn't meant to discourage you pre-ordering the game, feel free if you want, but be aware that the retailer likely has a disclaimer stating that the date they list isn't a guaranteed release date, and it certainly isn't."