Lamborghini Aventador SVJ testing - update!

What's the new test mule like up close? Even better, of course...

UPDATE, 09/04/2018, 1700h:
Now we're talking! After last week's short story based on a solitary pic, we now have a full array of Aventador SVJ spy shots. It is, as you would hope, fantastically imposing, the Aventador emboldened with a pair of incredible exhausts, a jutting front splitter and quite absurd rear wing. See the rest of the pics below, and stay tuned for more very soon!

ORIGINAL STORY, AS REPORTED 05/04/2018:
If you know your Lamborghinis, you'll know that 'Jota' is a badge reserved only for the most special cars. For the Diablo it meant a 600hp animal, based on the rear-drive SE30 and commonly referred to as the wildest Diablo ever. The Miura Jota was that fabled one-off test mule devised by Bob Wallace. And for the Aventador we've already had the J (guess what that stood for) concept, that incredible speedster-style creation from 2012.

But now it looks like the 'J' badge could return to a Lamborghini V12 flagship, with spy shots of this camouflaged Aventador. Rumours are it's an SVJ - yes, just like that other mad Miura - and serve as truly crackers valedictory special for the flagship model in a fashion that only Lamborghini would attempt. 2018 marks seven years of the Aventador, after all, and the Murcielago only went for nine...

Back when that car bowed out, it was the SV that marked the end. But of course we already have an Aventador SV - rather good it was, too - and so the arriverderci Aventador needs to go one step further still, hence SVJ.

What can we expect? Will this car shows bronze wheels a la Performante, plus some distinctly unsubtle green calipers. The front bumper design looks more aggressive than either Aventador S or SV, and there's a strange shark fin style device at the back - could this car at some point be utilising the ALA active aero tech?

While we're playing the guessing game, it seems more than likely that another Aventador will have some additional power. It has to, doesn't it? Conveniently, a 100hp rise from a standard Aventador - as happened with the Diablo Jota - would take the SVJ to a Ferrari 812-equalling 800hp, and 50hp beyond an SV. Which should be enough.

What this prototype actually turns out to be nobody quite knows for yet, but suffice it to say we're pretty damn excited to find out more. Might this be the last purely V12 Lambo ever made?