Technical Director Chassis Mike Gascoyne said
The TF106 is powered by the Toyota RVX-06 and will run on Bridgestone tyres.We have been working on the TF106 since the end of 2004 and the introduction of this car at such an early stage is a true testament to the work of the team and shows that we are able to react and push forward at a rate that is necessary to be at the forefront of Formula 1.
The TF106 that will run in Barcelona marks the first stage of development for this car with continuous improvements planned in the run-up to the first race. We are adopting a similar schedule to last season by testing the car early. This allows us to develop the mechanical side of car thoroughly before we introduce a new aero package in time for the first race. This strategy helped us to be extremely competitive at the start 2005 and we are confident the same will happen in 2006.
The front end of the TF106 is an evolution of our TF105B that raced in Japan and China, but the major design change for 2006 has been the implementation of the V8 engine in line with the new technical regulations, which has resulted in the redesign of the rear end.
The TF106 will be officially presented on the 14th of January

Full Toyota Statement