I agree. People have said they wouldn't announce two major projects so close together, and that is true, but only if you look in a past perspective. Blizzard has stated publically that they need to step up production to continue the growth WoW brought in. As the two games are on very different markets, and each game has a mostly loyal fanbase, they would not lose many customers to either, and gain in the long run. Most fall into the category of getting both regardless eventually anyway, or those that are only interested in one franchise. If they wait much longer, the hype for D2 would dwindle more, and it would have been longer since other D2 vets quit, making it less likely they would purchase D3.
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