There have been some official announcements, some official leaks, some unofficial leaks and plenty of all-out speculation heading into the 2015 North American International Autoshow - better known simply as Detroit. What is known, is that there will be more than 40 vehicles making their world debuts in Detroit. Here are a few of the ones we are most excited to see.

Acura NSX

It has been three years since the concept for Acura’s mid-mounted NSX supercar was first shown in Detroit, and the Japanese maker promises the car we’ll see this January is the production-ready version. We know it will be driven by a three-motor, twin-turbocharged sport hybrid powerplant, which sounds a lot like the BMW i8. The official bumph says it will be “a human-centred supercar that responds to the will of the driver and that builds upon the NSX heritage.†All we really know for sure is it will be curvy and sexy and one of the hits of the show.

Cadillac CTS-V

640 horsepower and a top speed of 201 mph (326 km/h) makes the performance version of GM’s CTS sedan the fastest and most powerful production Cadillac ever produced. A direct-injection, supercharged 6.2L V8 under its vented hood creates all that power, and 630 lbs.-ft. of torque too. Put your foot down and you can run this luxury sedan from 0 to 100 km/h in an estimated 3.7 seconds. Does the world really need it? Of course it does...

Chevrolet Volt

General Motors rolled out the 2016 Volt for a one minute teaser on stage at the Consumer Electronics Show in Las Vegas, but its official debut comes at Detroit. Not much is known, except that the Volt's gas engine is believed to be slightly larger and more powerful, running on regular fuel instead of premium like the current generation. Its battery will surely have a greater range, too, which owners have been calling for since the first Volt debuted in 2010.

Ford GT Successor

This one is a hot rumour, but if it’s true that Ford will debut a successor to the GT, it could be the car of the show. The story goes that Ford is getting ready a Le Mans GTE-class car to race in 2016, which is the 50th anniversary of its first Le Mans victory in 1966. So it makes sense to have a road-going car to complement that. Let’s hope so.

Ford F-150 Raptor

Ford has not released much information other than a nudge here and a wink there about the Raptor version of their new F-150. This will be a halo truck though and a sign that Ford is taking performance seriously in 2015. Expect the F-150's new, lightweight aluminum body to give the new Raptor even more punch than the previous generation.

Infiniti Q60 Concept

It is considered a concept, but this Q60 is really testing the water for Infiniti's next production premium sport coupe. The Q60 takes its low roofline and quilted leather seats from the larger Q80 seen at October’s Paris auto show, and combines them with some of the aerodynamic touches from the Q50 Eau Rouge. This concept is intended to target the BMW 4 Series, though it will be a little larger. No word yet on the engine, but don’t be surprised to see the Q80’s 3.0L V6 under the hood.

2016 Lexus GS F

Lexus GS F

The performance version of the full-size GS sedan shares the same 467 horsepower V8 engine as the RC F coupe that went on sale last year. Lexus calls the GS F a “track-ready†sedan that offers the remarkable “torque-vectoring differential†introduced in the coupe. It replaces the smaller IS F that’s no longer in production.

Mercedes-Benz GLE63

The German maker says it will debut “the sportiest SUV that Mercedes-Benz has ever made†in Detroit and that is expected to be the GLE63 AMG Coupe. Rumour has it the flagship SUV will keep the old 5.5L V8 engine, pumped up to around 550 horsepower. Spyshots suggest an aggressive-looking AMG body kit with four-pipe exhaust, and presumably stronger brakes and stiffer suspension.

Nissan Titan

Nissan has only teased a video for the new Titan so far, but we know that the next generation of the full-sized pickup truck will feature a new 5.0L Cummins diesel V8 under the hood, as well as an available gas engine. The Japanese maker is promoting the truck’s American roots, making a big deal of it being designed in California, engineered in Michigan, tested in Arizona and built in Mississippi.

Toyota Tacoma

We know even less about the latest Tacoma than we do the Titan, except that Toyota calls it an “all-new brute.†Teaser photos show design cues from the Toyota 4Runner SUV while more efficient 4 and 6-cylinder engines should also mark improvements in the new generation of Tacoma. This truck will compete in a suddenly very active segment that also features the new Chevrolet Colorado and GMC Canyon as well as the Nissan Frontier.