It turns out the rumor was true, the next McLaren Ultimate Series car, which is the group of cars including the Senna, Speedtail and P1, will be a roadster. The company revealed the preview rendering above, though it hasn't announced a name. Of course one of the most distinctive parts of the car is the complete lack of both a roof and a windshield. The styling is clearly McLaren with small headlights and a highly curvaceous body. Thankfully, the design looks closer to the Speedtail and GT than the over-styled Senna.
Part of what will make this car worthy of the Ultimate Series moniker is the claim that this will be the lightest McLaren road car to date. For reference, the Senna is one of the lightest cars in the McLaren lineup right now at just under 2,900 pounds. On the topic of the Senna, the new roadster will use "the same twin-turbo V8 engine." So it likely will make the same 789 horsepower and 590 pound-feet of torque as that supercar. McLaren says the goal of this car is to provide the most involved, connected drive of its top-tier supercars.
McLaren will reveal more details and photos of the car at its official debut sometime in 2020. It should finally have a name then, too. Prospective buyers will want to act quickly, as only 399 examples of the car will be built.