Is there any need of Shader Scripts in unity5 or PBS is enough?

I’m learning some shader scripting for unity 4.6.2. Does unity5’s materials support unity4’s Shader scripts? Is there any need of Shader Scripts in unity5 or PBS is enough? should i stop learning them and wait for unity5 free?

Shader knowledge will still remain useful, if nothing else, for post-processing effects. Also it will help you in the future if you get into other engines or lower level Open GL stuff. I recommend if you’re enjoying learning about shaders, continue to do so. Shader Wizards will always be in demand.