Re: Initial language support is for...
CLion introduced remote C/C++ development a few months ago but I think it was the last of the IntelliJ-based IDEs to do so but makefiles aren't quite as well supported as CMakefiles and the project configuration menu is a maze of twisty passages, all alike.
So I guess C/C++ will be bringing up the rear for the Fleet IDEs as well.
In the end it all boils down to "this is my remote directory, this is my makefile, this is my build command" yet most IDEs manage to make remote projects more complicated than they need to be.