Those of you looking for an iPhone, note that Apple stores will now be opening at 8am! When should you get to an Apple store? A good time to get to an Apple would now be from somewhere around 7am – 8am, if you want to preempt the morning rush. Trust me, it may be worth it, since lines after 8am can be 3+ hours long!

By permanently scatterbrained @Flickr
This applies to US apple stores on all days except Sunday. Some stores will also be offering rainchecks – I assume this means that they reserve an iPhone for you, should they run out while you’re still in line.
However, before you trot down in the morning, you might want to check for availabilities, and follow these 10 instructions – link and instructions all in here!
Via Appleinsider