A release candidate of fluidsynth 2.1 is available.
https://github.com/FluidSynth/fluidsynth/releases/tag/v2.1.0.rc1
The stable release is expected in late November. For more details refer to the mailing list:
https://lists.nongnu.org/archive/html/fluid-dev/2019-10/msg00012.html
For those who want to stay stable for the moment, fluidsynth 2.0.8 is available.
https://github.com/FluidSynth/fluidsynth/releases/tag/v2.0.8