SIGGRAPH 2014でOpenGL 4.5の仕様が公開になったようです．
Khronos Group Announces Key Advances in OpenGL Ecosystem
https://www.khronos.org/news/press/khronos-group-announces-key-advances-in-opengl-ecosystem
仕様書など
https://www.opengl.org/registry/
以下のFeaturesをサポートするようです．
- Direct State Access (DSA) : object accessors enable state to be queried and modified without binding objects to contexts, for increased application and middleware efficiency and flexibility
- Flush Control : applications can control flushing of pending commands before context switching – enabling high-performance multithreaded applications
- Robustness : providing a secure platform for applications such as WebGL browsers, including preventing a GPU reset affecting any other running applications
- OpenGL ES 3.1 API and shader compatibility : to enable the easy development and execution of the latest OpenGL ES applications on desktop systems
- DX11 emulation features : for easier porting of applications between OpenGL and Direct3D.