Does anyone know the release date of DirectX 12? I am looking to learn DirectX from MSDN. Should I wait for DirectX 12 or should I start learning DirectX11.2?
You can apply for DX12 beta with microsoft. Doubt they will send it to one that just want to learn instead of a experimented developer. My opinion is that you could look at ultramodern opengl, specially the direct state access extensions, but not really learn it, just have a look, as DX12 will be similar to that.
Also, you could look more at the theoretical side, like linear algebra, techniques, and how to write shaders. Starting with DX11 with DX12 around the corner will just make you lose some time, so better start with the generic things that are common for every API like the maths side.