The store is back up. US customers can now place orders for the updated iPod nano and iPod touch and the reduced-priced iPhone 3GS and iPhone 4. Starting at $129 for the iPod nano and $199 for the iPod touch, Apple is reporting that all models of the black iPod touch and the iPod nano are in stock as of today. The white iPod touch will ship by October 12.
Those interested in the iPhone 4S can pre-order those October 7 with an expected release of October 14.
The Apple Store is getting hit pretty hard with traffic right now, and if you're encountering site errors, you'll want to try back later.