This was implemented for version 3.0. There is a new Model Settings Panel which always appears docked on the side of the screen so that it does not take up valuable screen real estate. Other windows like the Support Generation window also remember their previous location so that you can position them wherever you want and they will stay there.
See this video for more details about the new model settings panel:
https://www.youtube.com/watch?v=i5rLVYpeoXU