Probably one of the greatest incentives and reason people did preorder was because pre-ordering got you into the closed Beta, so you get a chance to play the game before it is ready.
Many people have already had their pre-orders processed and received their information. It shouldn't be long now before everything is processed.
-Mike[Stardock Support]
The purpose of pre-ordering in this case (if not to access the closed Beta) was to ensure you would get a copy at your own convenience. We could have alternatively just said Sins would be available February 4th. Come back then to buy it. The way we did things allowed for people to put in their order early so it would be available to them at some point during the release day.
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