No GLNext - Vulkan is here to solve OpenGL's issues

[JEMC]

There's an article on Anandtech that tells more about it

http://www.anandtech.com/show/9038/next-generation-opengl-becomes-vulkan-additional-details-released

The interesting parts (at least for me), are that Vulkan is completely new and not based on OpenGL (so not compatible with it) and that it is based on Mantle:

Khronos has confirmed that AMD has contributed Mantle towards the development of Vulkan, and though we need to be clear that Vulkan is not Mantle, Mantle was used to bootstrap the process and speed its development, making Vulkan a derivation of sorts of Mantle (think Unix family tree). What has changed from Mantle is that Khronos has gone through a period of refinement, keeping what worked in Vulcan and throwing out portions of Mantle that didn’t work well – particularly HLSL and anything that would prevent the API from being cross-vendor –  replacing it with the other necessary/better functionality.