don´t think so... as far as I know Porsche offers first the factory powerkit option and later it packs this into the Turbo S (same done at the 911 Turbo/poerkit/ Turbo S history) ... possible after a facelift the Turbo S/powerkit option will be the base engine and they will offer later a powerkit option on the new base engine.
Porsche Panamera Turbo Powerkit laptime at Sachsenring
|Vehicle||Porsche Panamera Turbo Powerkit|
|Power / weight||540 ps / 1870 kg|
|Average speed||136 kph (84 mph)|
|Notes||Michelin Pilot Sport PS NO tires|
|Submitted||20.06.2011 by autobildsportscars|
Reference: sportscars 7/2011