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Ordered one MBP Retina a few hours after the keynote. Choosing 768 GB SSD bumped the shipping estimate to 3-5 weeks, and that hasn't changed yet.
But Apple has already drawn the full amount from my credit card. They only do that when they ship, don't they? At least that's my experience. And it's not a "reservation" as merchants sometimes do, it's a proper transfer, my credit card company says.
Turns out Apple actually just reserved the amount after all, so there's nothing shipping yet.

The other day, I cancelled additional items ordered at the same time (a MagSafe-to-MagSafe 2 adapter and a Thunderbolt cable). This shaved six days off the shipping estimate, giving me a new expected arrival between July 10 and July 16.

I guess those items might very well be in stock, but at different locations and that means extra time for putting it all together at some shipping hub somewhere. Could be worth a try to anyone who wants their 768 GB SSD Retina as fast as possible.
 
To all those who're waiting, take heard, apparently the new MBP retina will only really be good on Mountain Lion

Anandtech has the review to beat all other reviews, real insight there:

http://www.anandtech.com/show/6023/the-nextgen-macbook-pro-with-retina-display-review

Basically pushing all those pixels requires some custom hacks to the gfx hardware, something I wasn't' aware of, and Apple does this with custom code which is slow on OS X Lion. Will only really get fast in 10.8.
 
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