
Imagination with their proprietary drivers haven't advanced past OpenGL 3.3 while now thanks to leveraging the Zink OpenGL-on-Vulkan compatibility layer are now ready to advertise OpenGL 4.6 support for their products.
The Mesa PVR Vulkan driver continues to mature while with Imagination's DDK Rel 23.1 release they are now formally advertising Imagination GPUs with support for OpenGL 4.6 via Zink.
More details via the Imagination blog .