Aston Martin has revealed the DB9 GT which will make its public debut at the Goodwood Festival of Speed. This will be the last iteration of the DB9, before it gets replaced by an all-new model to be released in 2017. The DB9 GT is expected to go on sale globally from September.

The DB9 GT is powered by a 540bhp 5.9-litre V12 engine. Power is sent to the rear wheels via a six-speed automatic transmission. Aston Martin claims the DB9 GT can reach 100kph from rest in 4.5 seconds and has a top speed of 295kph. The DB9 GT weighs 1,785kg and 1,890kg in open-top Volante form.

Described by Aston's product development boss Ian Minards as “the very best of what DB9 can be”, the car gets a double wishbone suspension at the front and rear. Drivers can choose between Normal, Sport and Track driving modes via the car’s adaptive damping set-up.

The GT receives new badges on its exterior, although the most striking modification is its black front splitter and rear diffuser. Carbon-fibre tail inserts and new 20-inch alloy wheels are included in this model.

Inside, the DB9 GT gets a new generation of Aston Martin’s infotainment system. The AMi II touch-sensitive set-up features redesigned menus and more personalisation options. The car’s leather seats now carry the GT badging, and the steering wheel is clad in Alcantara. Interior options include a range of trims and finishes for the centre console, as well as a steering wheel inspired by the One-77.

Apart from revealing the DB9 GT, Aston Martin has also introduced some changes in the Vantage and Rapide. Vantage models get a new touch-sensitive centre console and the Vantage S and Rapide S get the firm’s AMi II infotainment system.