@cloudforest: @andylonn: I think it can be assumed that Varys has gained a certain measure of trust from Tyrion after releasing him from jail and smuggling him out of the continent. As sly as Tyrion is, I think he's got blindspots when it comes to these sorts of things, otherwise he wouldn't have fallen for Shae's "my lion" routine.
I've recently heard an interesting fan theory that Varys is actually a faceless man who is manipulating the political situation and biding his time in order to assassinate some target or, as seems more likely, bring about some coup for the devotees of the Many-Faced God/Great Other(?)/Red God. At this point it almost seems as plausible a motivation for this character as anything else.
Why are people still complaining about this? If you don't want to preorder, then don't. If you do, then do it the night before release so you've gotten whatever information it is that you needed to justify your purchase. It's not that big of a deal.