That Red Aurora version of the Samsung Galaxy S4 is now available over at AT&T. It's a 16GB version and is $200 on-contract. It's a few days later than the June 14th date AT&T originally, but it's better late than never for folks wanting to grab a unique looking version of the SGS4.
Here's a quick-link to AT&T: Samsung Galaxy S 4 - 16GB Red Aurora cell phone from AT&T