Mercedes-Benz->ke187 has released yet another teaser for the upcoming AMG GT. Nothing new here, as the Germans have been doing that for quite a few months, but this new video->ke278 confirms the sports car will make its world premiere on September 9th, 2014. Other than that, the footage showcases the development of the AMG GT, which took 32 months of engineering and testing in no less than 15 countries. Impressive!

What's more, the video confirms that the sports car will be available with two outputs at launch. The base model will benefit from 455 horsepower, while the range-topping model will come with 503 ponies on tap. Yes, I know the video above says "462 to 510 hp output," but like so many European brands, Mercedes is incorrectly interchanging PS and U.S. horsepower. Naturally, both will be powered by the all-new, turbocharged, 4.0-liter V-8.

A spiritual successor to the SLS AMG, the AMG GT is aimed at the likes of the Porsche 911->ke282. Smaller than its predecessor, the AMG GT will also be much lighter, due to extensive use of aluminum and carbon fiber. Styling-wise, it is known the AMG GT will mirror the SLS with its Coke-bottle design. Teaser videos and spy shots hint toward a sleek and wide body, with a curved rear end inspired by the iconic 300SL Gullwing. Speaking of which, Mercedes has decided to drop the gullwing doors for the AMG GT, the only major departure from the mighty SLS.

The jet-inspired cockpit will feature acres of leather and soft-touch materials, alongside plenty of aluminum and carbon-fiber inserts. As with most Mercs, the AMG GT will be packed with convenience and safety features. Stay tuned to TopSpeed for the full details as we approach the official launch date.

Mercedes-Benz AMG GT