Samsung and AT&T have made the Aurora Red version of the Galaxy S4 available today. Link to AT&T on the bottom of this page.
The Aurora Red 16GB version of Galaxy S4 is identical to the black and white versions, and will have the same 2GB of RAM, 1080p display and Snapdragon 600 under the glass. It's also priced the same, $200 with a new two-year contract or $640 if you don't want a contract.
You still have your 5″ 1080p display, 13MP back-facing camera, 2GB of RAM, Snapdragon 600 quad-core processor and all of that awesome Samsung proprietary software.