I thought that people here might be interested but the newest release of the AMD catalyst drivers (13.4) adds support for some OpenGL 4.3 features. Namely these:
- GL_ARB_compute_shader
- GL_ARB_multi_draw_indirect
- GL_ARB_shader_storage_buffer_object
- GL_ARB_arrays_of_arrays
- GL_ARB_clear_buffer_object
- GL_ARB_ES3_compatibility
- GL_ARB_explicit_uniform_location
- GL_ARB_fragment_layer_viewport
- GL_ARB_invalidate_subdata
- GL_ARB_program_interface_query
- GL_ARB_shader_image_size
- GL_ARB_stencil_texturing
- GL_ARB_texture_buffer_range
- GL_ARB_texture_query_levels
- GL_ARB_texture_storage_multisample
See the release notes for details:
http://support.amd.com/us/kbarticles/Pages/AMDCatalyst13-4WINReleaseNotes.aspx
Personally I'm pretty happy that AMD are still expanding support for OpenGL.