Big improvements are coming to bump mapping shaders, for both quality and performance.

Normal Mapping - nothing changed
   

Parallax Mapping - improved bumpiness, reduced artifacts
   

Relief Mapping - improved quality and performance, it's now mostly artifact free, very fast, production ready, and will be restored in the Editor Video Options in next release
   


That's not all, as additionally I've developed a much better solution for auto-generation of bump maps, so you can get high quality results with just a few clicks.

Awesome ! Always good to see graphics improvement