As far as I know, right now no one has tuning capability out for 2011's. Your 2011 is using a combination of the old CANbus system and the new FlexRay based communication system and architecture.
The 2011 Chrysler 300 and 2011 Dodge Charger both have a 100% new FlexRay based system.
It has been stated that the 2011 392's may be a year or more before tuning is available. Regarding the new hybrid sytem and the all new FlexRay system, who knows if tuning will ever be available because they are so advanced in the areas of encryption and intrusion protection.