Hello.
The page mentioned here Graphics — Supported Graphics APIs and Features is completely wrong.
For example for my Pentium G3420 says "No OpenCL support" and "No Intel Clear Video HD"
These are both wrong.
Because my Pentium G3420 supports OpenCL GPU v1.2 and it has Intel Clear Video HD of course .
Also it says everywhere OpenGL 4.
This is wrong too.
The OpenGL version supported right now by latest driver version is OpenGL 4.2 with a lot of OpenGL 4.3 extensions (but not all)
Probably next drivers version will include all extensions of OpenGL 4.3.
I don't know about openGL 4.4 though.