I can tell you 2 things for certain without getting confirmation from anywhere:
1) Apple is most certainly testing everything they can. There's no way their engineers are going home at 5 PM every day while the media keeps talking about this. I can promise you that they're living at work right now.
2) Apple is obviously going to tell the store and phone employees to pretty much say nothing. You don't want to make promises when you don't even know what you're dealing with.
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I could have told you all that last week. Since then, we've seen an Apple store memo that says pretty much point #2, and now you're talking about a Steve Jobs e-mail that sure seems to match point #1.
Are the e-mail and the memo real? I don't know. But it doesn't matter if they are. Point 1 and 2 are clearly both real so it doesn't matter if this evidence is real or fake. We really don't need them to deduce those 2 facts.