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).
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.