By Lance Whitney Apple has acknowledged that supplies will be tight at first, and it will be limiting preorders to online customers.

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Source:: http://cnet.com.feedsportal.com/c/34938/f/645093/s/453feb00/sc/28/l/0L0Scnet0N0Cnews0Capple0Ewatch0Eshoppers0Eprepare0Eto0Epreorder0Eonline0Eand0Ewait0C0Tftag0FCAD590Aa51e/story01.htm