The new iPhone 5C comes in five colors and starts at $99. The 5C has the same internals as the iPhone 5 with the colorful plastic enclosure.
The iPhone 5S is the logical jump from the iPhone 5. Faster, better battery and better camera. The 5S also has a fingerprint sensor that will let you unlock your device and even use it as a password to buy apps. The 5S comes in similar black and white of the 5 as well as a new gold color. The 5S starts at $199 on a 2 year contract.
Both phones ship on September 20th.