The four-seater droptop has a 6.0-litre twin-turbo V12 engine and will cost more than $400,000. The GTC will feature alongside the latest Arnage T with 1000Nm, a Continental Flying Spur and a Diamond Series version of the Continental GT, which has the first carbon ceramic disc brakes used on a Bentley.
The GTC will also join a cavalcade in the city on Wednesday. A dozen show treats will be led by a Chrysler 300C in Victoria Police colours and Melbourne Lord Mayor John So will ride in an Aston Martin DB9 Volante.
The cavalcade will travel from the Town Hall to Federation Square, starting at noon.
Action for the show is building. The Bentleys join an updated Lamborghini Gallardo, and Elfin is also coming, after its sale to Tom Walkinshaw, with a celebration for the company's 50th birthday.
"It is great to see Elfin marking its anniversary at the show," motor show director Russ Tyrie of the VACC says.
"We also have Porsche confirmed with the facelifted Cayenne, and EDAG is also tweaking a radical Cayenne for the show."
Tyrie says the final arrivals will not be confirmed until just before the official opening, partly because of overseas shipping schedules and partly because carmakers work to provide surprises for showgoers. "We are cramped a little bit for space this year," he says. "The new development of the Convention Centre means we don't have as much space in the concourse. Still, we will have about 450 cars in total."
This is expected to include newcomers from Suzuki and Honda, which are on the secret list, as well as details of the forthcoming Jeep Wrangler.The show opens at 5pm next Friday and closes at 6pm on March 12. It is open from 10am to 10pm each of the other days.