Yes, on the evening of the 5th I pre-ordered and around 4:30 on the 6th Amazon sent me an email saying that they expect it to be delivered on the 11th (via Prime). A few minutes later I got a courtesy email from my cc saying that my card had a large purchase just made.
I'm sorry they haven't sent you an update. I can't think of a good reason why they would move forward with my order but not yours. Hopefully they processed us all together and it's just a matter of time for your email to show up.
Also ordered SSD from TD on Wed w/ 1 day shipping and it came yesterday. Their customer service is spot on too. With newegg I had to hold for more then half hour when I contacted them about my issue..TD answered right away (when I had to verify the 680 purchase)
Amazon has EVGA 680 in stock right now - 3left
Amazon is showing in stock on April 9th now so still a good chance your order will ship early next week if you get it in soon.
EDIT: Scratch that, no longer available now.
Gentlemen get your wallets ready
Galaxy in stock at tigerdirect: