Yes, the Bongo 3 WIP currently has a C# SDK under development. This will allow Grasshopper components to be created that modify Bongo data, etc. Currently, no custom Grasshopper components have been written with the Bongo 3 WIP. Potentially some work will be done to allow sliders and other components to be animated with Bongo.
If you’re feeling froggy you can actually play with the Bongo SDK now with the WIP. With a C# script component right click it and select “Manage Assemblies.”
You can then add an assembly
And navigate to “C:\Program Files\Bongo 3.0 (64-bit)” and select BongoNET.dll. This is a WIP though and I offer 0 guarantees of anything. There’s very little if any documentation and you’ll have to do all the leg work of creating something useful.