Earlier this year, Mercedes lifted the wraps off the new 2018 S-Class luxury sedan set to rival the BMW 7 Series and the new recently revealed Audi A8. Customer deliveries are scheduled to start soon, but don't think that the luxury automaker has forgotten about its two-door siblings. Mercedes has revealed that we can expect to see both the 2018 S-Class coupe and cabriolet to debut at this year's Frankfurt Auto Show in September before launching later this year.

Like the S-Class sedan, we're expecting to see subtle design changes, including a sculpted front end and new wheels.You can also expect to see the same range of powertrain options introduced in the facelifted S-Class sedan, too. This includes the new 4.0-liter twin-turbo V8 powering the S560 and AMG S63 models capable of producing 463-hp and 516 lb-ft of torque. It's unclear if the entry-level 3.0-liter V6 in the S450 will be offered, but chances are we can expect to see the V12-powered S600 and AMG S65 models in coupe or cabriolet form. The 2018 Mercedes S-Class is more than just a minor facelift, however.

The flagship luxury sedan introduced a suite of new semi-autonomous driving assists, such as Active Steer Assist, Active Lane Change Assist, and Active Emergency Stop Assist, which should all be carried over in the S-Class coupe and cabriolet. Like the Audi A8 and BMW 7-Series, it also has a Remote Parking Assist. Of course, the reveal of the S-Class coupe and cabriolet will be completely overshadowed by the world debut of the much-anticipated Project One hypercar.