Toyota says it will use the Geneva concept to gauge public reaction to the idea, although the Japanese company adds that it will press ahead with engineering tests on a prototype at the same time.
The shots show the car's styling is virtually unchanged from the coupe. The bootlid is raised, suggesting this could be close to production-spec. It is thought the car will feature a fabric roof in an effort to keep any weight increases to a minimum.
As reported by Autocar last May, key Toyota engineering staff involved with the development of the rear-wheel-drive coupé are keen to capitalise on the positive reaction to the car by producing several variants.
Toyota GT86 project engineer Tetsuya Tada has previously confirmed to Autocar that a convertible version of the car is “technically feasible”. A drop-top version of the Subaru BRZ is also in the pipeline.
Given the engineering work already undertaken and the likely popularity of an open-top version, particularly in California, a production convertible is almost inevitable, and could possibly be on sale as early as 2014.
Also making its world premiere at the Swiss automotive expo will be the Toyota i-Road concept. It has been conceived as a compact, emissions-free two-person vehicle to offer quick and efficient urban transport.
The two concepts will share Toyota's show stand with the production-ready version of the Toyota Auris Touring Sports.