There have been all sorts of rumors regarding Lamborghini's supposed debut later this week at Pebble Beach. Some have claimed a new limited-edition hybrid hypercar will be unveiled. It's possible, but when we reached out to Lamborghini the familiar and unwanted reply was "no comment."

However, a Lamborghini spokesperson did confirm to be on the lookout for something to be announced in the coming days. What could it be? The Supercar Blog has managed to get ahold of a leaked teaser, shown here, that simply says "63 Edition". No other details are currently available but there's a reason to believe this thing is based on the Aventador SVJ to some extent. But what does the number 63 signify here?

Our best guess is that it somehow commemorates the year in which Lamborghini was founded, 1963. Even back then Lamborghinis were powered by naturally aspirated V12 engines and, as we all know, the Italian carmaker has plans to equip future V12s with hybrid assist. They'll still remain naturally aspirated, at least for now, but they'll be connected to batteries in order to maintain the proper high output and emissions balance. Lamborghini simply has no choice but to do this if it wants to keep selling cars.

Other reports suggest the first hybrid Lamborghini will debut next month at Frankfurt instead of at Pebble Beach. A major international auto show like Frankfurt makes far more sense for such a high-profile debut.

Therefore, the supposed 63 Edition could very well be the last or one of the last pure Lamborghini V12s. Again, this is purely speculation on our part, but this does make sense. Commemorating the first year of Lamborghini and its V12s with a 63 Edition just a few weeks prior to a hybrid V12 debut is fitting. All questions will be answered in just a few days' time. Stay tuned for more updates.