What is the Lamborghini LB715-5 and the Lambo 83X? Find out what we're hearing inside.

Lamborghini may be bringing two new models to the Paris Motor Show at the end of the month.  The website for magazine 0-60 claims they have obtained a schedule from an unnamed source detailing a series of meetings US-based dealers are set to have at Lambo HQ.

The day will include the unveiling of the Lamborghini LB715-5 and the Lamborghini 83X.  The company will apparently try to focus attention on the 83X as the leaked agenda indicates roughly one hour of time dedicated to that vehicle, vs 25 minutes dedicated to the LB715-5.

0-60 is reporting that the €500,000 LB715-5 is a Murcielago replacement set to use a V12 engine that delivers between 715 and 825 horsepower (533 to 615 kW).  It is rumored to use Austrian firm Carbo Tech's carbon-fiber tub.  This is backed up by the 45-minute meeting on CFK, which could stand for Carbon Faserverstärkte Kunststoffe, or Carbon Fiber Plastics.

Another rumor being dished out by the magazine is that the 83X will take over for the Gallardo.  Contrarily, it could also be a competitor to the Ferrari 599 GTB.

More information could be revealed if the Lamborghini dealer meeting takes place as planned in Sant'Agata Bolognese, Italy, on September 23.  If no details leak out then, look for more information to drop in Paris on Sept. 30.

UPDATE: Lamborghini has released the 3rd teaser image of their mystery vehicle.

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