Renault has confirmed the unveiling of an Alpine concept at this weekend's Formula One Grand Prix de Monaco, but as we get closer there are new details alongisde new questions. Just yesterday came the leaked image of a concept called the A110-50C, heavily based on the Renault DeZir concept, that could turn out to be the thing itself or pure Photoshop fancy. French press is reporting that Renault COO Carlos Tavares has confirmed that a 400-horsepower concept will appear that "could be homologated and on the road in the future," and it will take a lap of the Monaco course.

Another story in the French press has a picture of Sebastian Vettel sitting inside a vintage Alpine 110 racer – the car that all this hubbub is about, an example of which is pictured above. It was taken in mid-April for German GQ magazine at the Barcelona F1 circuit. Vettel and Tavares will supposedly be presenting the concept, but that report indicates the car is called the ZAR and suspects the first letter is for "zero emissions," the second for Alpine, the third perhaps for Renault. A report in CNET France also claims the ZAR appellation for the concept, allowing that the meaning of the acronym can only be supposition for now. True, the DeZir was an all-electric concept, so either the A110-50C/ZAR has 400 electric horsepower and there isn't any mid-mounted 3.5-liter Nissan V6, or Renault has found a way to break every single law of internal combustion... or we just don't know what's really in there.

We'll should know all come Friday at 1:00 PM local time.

* UPDATE: The leaked image (inset) is the real deal. Renault has released some teaser photos and a video, and the reveal will happen on French Yahoo! Autos on Friday at 1:01 p.m. Monaco time. Scroll down to watch the teaser vid.