Not Miller, Miller uses dynamic compressor driven by engine power to supercharge the engine, which means it has increased efficiency over a standard N/A engine, but if you run any more pressure than is needed to expand the burning mix to atmospheric pressure you are still losing energy. Turbo helps pick some of that energy back up, allowing much more specific power, at only a slight efficiency disadvantage to a crippled extremely short duration Miller cycle.
Since HSD takes away all the "feel" anyways, I hope Toyota turbos this hybrid sports car.
Edit: my bad, miller cycle engines usually use a positive displacement pump, which means the only benefit provided is the option of intercooling. A turbo, tuned 2GR-FXE would be pretty cool
