Porsche is already at work on more variants for the Panamera. Motor Trend has learned from a source that work has begun on a model that will sit above the high-performance Turbo model. Using the Biturbo V8 from the Panamera Turbo, the source explained that Porsche would use various components from the 918 hybrid to produce somewhere in the range of 700 horsepower and 800 pound-feet of torque.
There will also be the standard Panamera Hybrid, most likely using a supercharged V6. No word on when we could see either model.
Source: Motor Trend