Ah, gotcha. Same thing, you should be able to order it online once it released or get a comic shop to order one in for you. I think preorders for the books have closed on Diamond's side, because I don't see anyone pre-selling Cover D for #1 right now online. (I'm not seeing anything on TFAW, Forbidden Planet, MyComicShop, or Mile High.) It'll probably be easier to find once the book actually releases. And if all else fails, there's always eBay.
It's worth noting, if you haven't picked up a IDW comic in a while, that most IDW comics include a cover gallery of all the covers for that issue. So, even if you miss out on the cover you want, for whatever reason, you'll still get a full page of the artwork, anyway. You probably already know that, but just in case you didn't.
Again, if you have a local comic shop, they'd probably be able to hold a copy for you.
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