Spy photographers have caught the Mercedes-AMG GT 73 on multiple occasions, but the automaker was quietly released a handful of images on their own.

While the model doesn’t look terribly special at first glance, there are a couple of telltale clues this isn’t your typical GT 63.

Starting up front, there’s new ducting in the central air intake. The outside intakes also trade horizontal slats for angular ones.

Also Read: The Mercedes-AMG GT 73 Is Almost Ready To Hunt Supercars With Its 800 HP

The model also appears to be equipped with unique lightweight alloy wheels. However, the most telling feature is “V8 Biturbo E Performance” badging that replaces the usual “V8 Biturbo 4Matic+” messaging on the 63.

While Mercedes isn’t ready to talk about the car, it’s expected to have a plug-in hybrid powertrain that consists of a twin-turbo 4.0-liter V8 engine, an electric motor and a lightweight battery pack. In the 2017 Mercedes-AMG GT concept, this gave the model a combined output of 805 PS (600 kW / 816 PS). The concept could also rocket from 0-62 mph (0-100 km/h) in less than three seconds.

The pictures were released as part of an announcement revealing closer ties between Mercedes-AMG and the Mercedes-AMG Petronas F1 team. The company said this will allow for an “even more in-depth, mutual transfer in the development of future-oriented, electrified technologies for motor racing and for the road.”

Mercedes-AMG Chairman Philipp Schiemer added the E Performance label will be used to advance the company’s “interpretation of a powerful and efficient hybrid technology for the future road-going models.” The company also touted technology transfers as they noted their electric turbocharger is “standing the test in Formula 1 under extreme conditions and will soon be used in AMG production models.”

H/T to Evo