So Toyota is introducing a new generation D-4S system. I'm not sure exactly which engines it will end up on. The main differences are a high tumble port and a single fan-shaped spray designed to work with the tumble flow. Remember that the original D-4 direct injection was a high swirl combustion, and the D-4S on the FA20 is focused on high intake port flow. So this new system is following the industry trend of high tumble ports for faster combustion.
In the picture below you can see the difference between the D-4S dual fan spray which is presumably in the current GT86, and the new fan spray configuration.
