Tessellation shader on Mac OSX
Tessellation shader for height/displacement is available for Windows but not for OSX where the menu is greyed out, both in SSE2 and OpenGL.
The feature would also be nice in Designer and Painter but it really is essential in B2M since you currently have to tweak the height map without being able to see the result of what you are tweaking in the viewport since there is no displacement!
Materials > Default > Shader > physically_[...] > Tesselation
Also, I think it should be written tessellation, not "tesselation".