This is not the first time Ferrari and Maserati have shared motors as the F430 42. liter V8 is based on a shared design with Maserati as well. The difference, however, is that the Ferrari 4.2 liter V8 and the Maserati 4.2 liter V8 have major architectural differences. The F430 4.2 liter gets a flat-plane crank allowing it to rev to 8500 rpm and have that glorious Ferrari engine note whereas the Maserati 4.2 V8 used in the Quattroporte, Gran Turismo, and Coupe/Spyder has a traditional crossplane crankshaft. This among other internal differences such as the pistons and rods.
With this new twin turbo 3.9 liter V8 motor Maserati and Ferrari share a more similar V8 than ever before. Both Maserati and Ferrari use twin scroll turbos on the motor although whether the turbochargers are the same size is anyone's guess. With cost cutting measures these days it would not surprise anyone if they happened to be the same model turbochargers.
Ferrari claims this is the first turbocharger motor without turbo lag which is basically a load of crap. There is no such thing as a turbo motor without turbo lag as no matter what measures are taken to minimize lag a turbo still is a mechanical part that needs exhaust gases to rotate. Essentially, all turbos need to spool up. Ferrari also claims their flat-plane crank helps throttle response. The Maserati motor uses a crossplane crankshaft and different exhaust manifold so it is possible the turbochargers are different.
The motor does not eliminate lag but it does a great job minimizing it as Ferrari themselves states turbo response takes less than a second. So, there is some lag despite in the exact same video explaining the motor Ferrari claims no turbo lag. A bit confusing but it is simply marketing. Somewhat insulting to people's intelligence though when they make a claim they contradict themselves right away.
With 560 horsepower and 557 pound-feet of torque this motor is a beast right out the gate. That said, this engine will change the Ferrari tuning landscape. All of a sudden Ferrari's will now be tuner friendly and 600+ horsepower with a tune should be no sweat. The advantage Porsche had with the 911 Turbo as far as aftermarket power and ease of tunability all of these years disappears.
Ferrari has not offered a turbo motor in a long time. Since the F40 way back in the 80's that did battle with the Porsche 959. Before that, the Ferrari 288 GTO featured turbo power as well as the 208 GTB.
It's a new era for Ferrari. The future is boosted.