PS - DubDub: Saying 'Restricted Sept 20, 2010' is just silly since the PRERELEASE will be about five days after the B/R announcement. For reference, Chrome Mox was in Mirrodin, which stores could sell as of Oct 2, 2003. It didn't get restricted until Jan 1, 2004 - the first B/R after the card was released. (Ponder - the only Extended-legal card restricted in Vintage - was released to us in Lorwyn October 12, 2007, and was restricted June 20, 2008, about 3 B/R's after its introduction.) IOW they still give a couple months before they pull the trigger, barring highly unusual circumstances. I don't think this is unusual enough to qualify.
As recently as with Preordain they considered Restricting a card before its release:
http://www.wizards.com/Magic/Magazine/Article.aspx?x=mtg/daily/ld/96I would like to call your attention to a card in the Magic 2011 Visual Spoiler.
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By that same logic, Preordain should be restricted as well.
And let's recall that there is in fact precedent for restriction before release:
http://www.wizards.com/default.asp?x=dci/announce/dci20030529aMind's Desire
Although we prefer for a new card to be "proven" in a format before we ban or restrict it, testing has shown that multiple copies of this Scourge card can quickly lead to degenerate game states. With four copies of Mind's Desire, a player would be able to play every card in his or her deck on the same turn without too much difficulty.
Also, note that I was talking about Evenpence's postulated rules text for the card from before it was spoiled, which was at an immensely higher powerlevel than what has since been spoiled.
