GL_EXT_framebuffer_object (Requires OpenGL 3.0).GL_ARB_pixel_buffer_object (OpenGL 2.1).GL_ARB_fragment_program_shadow (OpenGL 1.3).GL_NV_texgen_reflection (Requires OpenGL 1.3).GL_ARB_shading_language_100 (OpenGL 2.0).GL_EXT_texture_lod_bias (Requires OpenGL 1.2 / Core Feature of OpenGL 1.4).GL_ARB_vertex_buffer_object (OpenGL 1.5).GL_ATI_separate_stencil (Requires OpenGL 1.2.1).GL_EXT_texture_rectangle (Requires OpenGL 1.3).GL_ARB_vertex_program (Requires OpenGL 1.3).GL_EXT_stencil_wrap (Requires OpenGL 1.4).GL_EXT_shadow_funcs (Requires OpenGL 1.3 / Core Feature of OpenGL 1.5).GL_EXT_texture_compression_s3tc (Requires OpenGL 1.2.1).GL_ARB_texture_env_crossbar (OpenGL 1.4).GL_ARB_texture_env_combine (OpenGL 1.3).GL_ARB_texture_border_clamp (OpenGL 1.3).GL_EXT_texture_filter_anisotropic (Requires OpenGL 1.2).GL_ARB_texture_compression (OpenGL 1.3).GL_NV_blend_square (Requires OpenGL 1.2.1 / Core Feature of OpenGL 1.4).GL_EXT_multi_draw_arrays (OpenGL 1.2 / Core Feature of OpenGL 1.4).GL_ARB_internalformat_query (OpenGL 4.2).GL_EXT_fog_coord (Requires OpenGL 1.2 / Core Feature of OpenGL 1.4).GL_EXT_secondary_color (Requires OpenGL 1.2 / Core Feature of OpenGL 1.4).GL_EXT_blend_func_separate (Requires OpenGL 1.2 / Core Feature of OpenGL 1.4).GL_ARB_map_buffer_alignment (OpenGL 4.2).GL_EXT_separate_specular_color (Requires OpenGL 1.2).GL_EXT_packed_pixels (Requires OpenGL 1.2).GL_EXT_rescale_normal (Requires OpenGL 1.2).GL_SGIS_texture_lod (Requires OpenGL 1.2).GL_EXT_draw_range_elements (Requires OpenGL 1.2 / Core Feature of OpenGL 1.4).GL_SGIS_generate_mipmap (Requires OpenGL 1.4).GL_SGIS_texture_edge_clamp (Requires OpenGL 1.2).GL_EXT_compiled_vertex_array (Requires OpenGL 1.1).GL_EXT_blend_color (OpenGL 1.4 OpenGL 1.4).GL_EXT_blend_subtract (Requires OpenGL 1.2).GL_EXT_blend_minmax (Requires OpenGL 1.2).The complete list of all 178 extensions exposed for a HD Graphics 4000 GPU under Win8 64-bit is available here GLSL Hacker, OpenGL Viewer demo (latest DEV version for Windows) GL_ARB_texture_compression_bptc (OpenGL 4.2).GL_ARB_program_interface_query (OpenGL 4.3).GL_ARB_multi_draw_indirect (OpenGL 4.3).GL_ARB_shading_language_420pack (OpenGL 4.2).GL_ARB_shading_language_packing (OpenGL 4.1).GL_ARB_shader_atomic_counters (OpenGL 4.2).GL_ARB_compressed_texture_pixel_storage (OpenGL 4.2).GL_ARB_vertex_attrib_64bit (OpenGL 4.1).GL_ARB_separate_shader_objects (OpenGL 4.1).GL_ARB_texture_buffer_range (OpenGL 4.3).
adds a ton of new OpenGL extensions ( OpenGL 4.1 / 4.2 / 4.3), adds Intel Wireless Display native Miracast support for wireless streaming on Windows 8.1, brings DirectX 9 optimizations and and fixes multiple bugs.
Intel has released a new Win7/Win8 driver for HD Graphics 2500/4000/4200/4400/4600/5000, for Iris Graphics 5100 and for Iris Pro Graphics 5200.