Allpar.com is reporting the following new feature and paint colors for the 2013 Challenger

The Challenger will get rear park assist as an option or standard feature on all models; radar red leather will be available on SXT Plus, R/T Plus, and R/T Classic; and new colors will be available (Billet Metallic, Granite Crystal, Jazz Blue, Phantom Black Tri-Coat).

UPDATE: Rumors also has Plum Crazy Pearl Coat (not sure where coat comes in) coming back the 1st quarter of 2013