The only thing Porsche loves more than sports cars is making different variants of its sports cars. The current-generation Porsche 911 has 22 different ones, if you check the company's website. That covers everything from Carrera T to Turbo Z the 911 GT3 90 F. A. Porsche.But the company isn't done yet. Porsche just teased yet another variant. The newest 911 will arrive on April 14, and it will be "a particularly fun sports car" according to the company. We believe it's the first GT3 with an open roof. There Are Plenty Of 911 Lineup Holes To Fill PorscheIt's not like the rest of Porsche's lineup is exactly a bunch of dull land yachts, especially if you stay in the 911 lineup. So what does it take for the German sports car company to call something particularly fun? Unlimited headroom is usually a good place to start.If you look at the pre-facelift current-generation, aka the 992.1 cars, you can see some that are missing from the current lineup. Those include the Sport Classic, the Dakar, and the S/T. But we don't think it's any of those. We believe that it is something new.CarBuzz/Valnet We'll strike the Dakar from the list of possibilities immediately. The Dakar is fun, but calling it "particularly fun" doesn't seem quite fitting with the off-road nature of the car. Other hints include the low ride height, and that Porsche said it planned to reveal the new car "on the spectacular mountain roads of Tenerife." We would expect the Dakar to be somewhere a little more desert-like. Don't worry, it's still coming.The S/T and Sport Classic are more likely trims for this debut, though they could get different names. S/T was a 2023 release for the 60th anniversary of the 911. It used the 4.0-liter flat-six from the GT3 RS with the GT3 Touring's body, then Porsche added its own carbon fenders and doors. Because it was a GT3 Touring base, it didn't have the large rear fender vents.Sport Classic was a Turbo with no rear vents, rear-wheel drive instead of AWD, and it came exclusively with a seven-speed stick. That was a feature you couldn't (and can't) get on the Turbo, and it was a hot one. This Could Be The First GT3 Cab CarBuzz/ValnetBut we have strong evidence that suggests this car isn't either of those. One small detail under Porsche's car cover gives it away, a small seam just above the top of the windshield. That can only mean one thing: Cabriolet. It's the seam where the 911 Cab's cloth roof meets the windshield header.Also, the CarBuzz spies have captured images of a new cabriolet testing. We thought it was a Turbo Touring, which would be a first, because the standard Turbo still hasn't been released for the 992.2 generation car. But looking back at those spy shots, there are some serious similarities.Those testers didn't have the rear vents that we expect from a Turbo, or the big wing of a GT3 or GT3 RS. They did have the exhaust pipes we expect from a 911 Turbo, with wide-set pipes for the convertible and closer-in pipes for the coupe. We can't tell what's lurking behind this teaser's rear bumper, though.Okay, maybe we've been teasing this out for too long. We think that this new Porsche will be the very first 911 GT3 Cabriolet. A drop-top might seem the antithesis of the GT3, which is generally the lightweight Porsche for the ultimate handling experience. But we saw Porsche testing something like this last July. It was a car with GT3 exhaust, a Touring rear spoiler, and a fabric roof.A GT3 Cabriolet would be strange, but it would probably also be a very hot seller. It's our best guess as to what's coming, but the evidence seems solid. This would give buyers the ultimate naturally aspirated 911 with a little more natural aspiration for the cabin, too. In any case, we'll find out for sure on April 14. Stay tuned.