Phoronix: OpenGL 4.2 Specification Published With GLSL 4.20

The good news: Khronos has published version 4.2 of the OpenGL specification in conjunction with the GL Shading Language version 4.20 specification. The bad news? The open-source Linux graphics drivers are falling hopelessly behind in keeping up-to-date with the latest upstream OpenGL releases and what is supported by the proprietary drivers and those for other operating systems...

http://www.phoronix.com/vr.php?view=OTc2OQ