2020 is an important year for Maserati. A few weeks ago, the 2021 Maserati Ghibli Hybrid debuted as Maserati's first ever electrified model. In September, we'll also finally get to see Maserati's much-anticipated MC20 halo hybrid sports car. But this doesn't mean Maserati is neglecting its older models.

The Maserati Quattroporte is one of the Italian automaker's oldest models and is well overdue a refresh. Maserati gave the luxury sedan a very subtle facelift for the 2016 model year, and now Maserati is preparing another update to keep the current Quattroporte looking fresh until the next-generation model arrives in 2022 or 2023.

Spotted by our spy photographers cruising city streets, this Maserati Quattroporte prototype is camouflaged at the front and back, so we can expect some minor exterior changes such as new headlights and a revised grille and front bumper. Elsewhere, the rear lights will be restyled and the rear bumper will get some minor changes. Similar changes were applied to the recently updated Maserati Ghibli.

Our spies didn't get a peek inside the new Maserati Quattroporte facelift, but we're expecting the cabin to be updated with a larger infotainment display and a fully digital instrument cluster.

In the 2021 Maserati Ghibli, the screen size increased from 8.4 inches to 10.1 inches and the analog gauge cluster was replaced with a new digital instrument panel.

Under the hood, there's a chance the 2021 Maserati Quattroporte will receive the 2.0 liter four-cylinder mild hybrid powertrain that debuted in the Ghibli, which generates a combined 330 hp and 331 lb-ft of torque. We also know a new Trofeo version of the Quattroporte will debut on August 10 for the first time in its model history alongside a new Ghibli Trofeo and Levante Trofeo. A prototype of the new Levante Trofeo has already been spied with a larger, more powerful 4.0-liter V8, which could also power the new Quattroporte Trofeo.