From what I just read there may be a V8 in the new gen Challengers
Performance and powertrain
Engine: Supercharged 6.2L HEMI V8 engine.
Horsepower: Approximately 850 horsepower and 790 lb-ft of torque in the SRT model.
Acceleration: A 0-60 mph time of 2.9 seconds.
Hybrid assist: A 48V mild hybrid system for instant torque.
Transmission: Available in a 8-speed automatic or a 6-speed manual transmission.