Mesa 13.0.6 is a bug fix release which fixes bugs found since the 13.0.5 release.
Mesa 13.0.6 implements the OpenGL 4.4 API, but the version reported by glGetString(GL_VERSION) or glGetIntegerv(GL_MAJOR_VERSION) / glGetIntegerv(GL_MINOR_VERSION) depends on the particular driver being used. Some drivers don't support all the features required in OpenGL 4.4. OpenGL 4.4 is only available if requested at context creation because compatibility contexts are not supported.
Bug 68504 - 9.2-rc1 workaround for clover build failure on ppc/altivec: cannot convert 'bool' to '__vector(4) __bool int' in return
Bug 97102 - [dri][swr] stack overflow / infinite loop with GALLIUM_DRIVER=swr
Bug 98869 - Electronic Super Joy graphic artefacts (regression,bisected)
Bug 99401 - [g33] regression: piglit.spec.!opengl 1_0.gl-1_0-beginend-coverage
Bug 99456 - Firefox crashing when opening about:support with WebGL2 enabled
Bug 99677 - heap-use-after-free in glsl
Bug 99715 - Don't print: "Note: Buggy applications may crash, if they do please report to vendor"
Bug 99850 - Tessellation bug on Carrizo
Bug 100049 - "ralloc: Make sure ralloc() allocations match malloc()'s alignment." causes seg fault in 32bit build