Is that planned to change anytime soon?
See
this thread for the discussion on the biggest roadblock on the way to a core-only rendering implementation.
What do you use for graphics debugging in the meantime?
gDEBugger got subsumed into
AMD CodeXL a while ago. The nice thing is that CodeXL was already free before. Not long ago, AMD decided to make it open source as well, so currently I don't really know of a better OpenGL/OpenCL/DirectX/Vulkan/CPU debugger/profiler than CodeXL. It works well when using non-AMD hardware as well, however as one might expect, AMD hardware can provide more extensive information in certain situations. This might change for the better in the future since it has become open source.