Korg OpSIx FM Synthesizer concept design presented at the NAMM 2020. According to the Korg product representatives this was shown as a prototype design with no current plans about what the actual production specifications are other than being based on the original DX7 synthesizer, but is said to have extended features beyond the original such as filters and ring-modulation. It is expected it will be about 12-18 months before a final product may announced.