Here's what we know: the Mercedes-AMG One hypercar has been in development since 2017 and there have been a few delays along the way. Fortunately, it appears the German automaker has nearly worked out those final issues. Remember, adopting a Formula 1 one engine for road use isn't exactly the easiest task. Meeting staggering high overall performance benchmarks only increases pressure on the engineering team. Powered by an F1-inspired 1.6-liter V6 hybrid E-turbo powertrain, the AMG One's final output figure was reported to be around 1,000 horsepower.

Today, however, The Supercar Blog claims it has learned from unnamed sources total combined output will, in fact, come to over 1,200 hp. But again, this information has not yet been confirmed by AMG, so take it with a grain of salt.

Still, it's not impossible to achieve that amount of power and the additional time the R&D team has had to work out various issues could have also provided the opportunity to improve things even further. Membership into the AMG One owner's club is ultra-exclusive; production is limited to just 275 examples.

We wouldn't be surprised to find out if those future owners have already been made privy to the car's final specs, or, at least, the last data available. They're only paying a staggering $2.75 million per car, so they should, at the very least, know what's going behind the scenes before the rest of the world does. Other details coming from the anonymous sources include some exterior changes, specifically a "larger fixed aerodynamic part at the rear."

As unclear as that is (again, this is all just a rumor for now), the other design changes do sound a bit more realistic, specifically four rear exhaust pipes instead of the three seen on the prototypes, and new wheel designs. Mercedes-AMG hasn't provided a precise reveal date just yet, but deliveries are reportedly due to get underway in the second quarter of 2021.

In place of traditional auto shows, expect an online reveal to happen before that.