The Apple Store has just gone into maintenance mode globally in preparation for the launch of iPhone 4 pre-orders, and our readers seem intent on bringing down our tip inbox as well. Steady yourselves, chaps (and ladies), the fun starts when the Store goes back up so let's pace ourselves with all the excitement. We'll alert you as soon as that happens, but for now, let's go easy on the old tip jar, eh? It's not made of Gorilla Glass, you know.

[Thanks to everyone who sent this in]

Update: AT&T's online portal is showing an iPhone 4 pre-order front end, but is yet to offer users the actual option to order the phone up. See a screenshot of it after the break.