The page where you can sign up for the beta test and thereby get the download location is at http://www.artofgeography.com/maps/fp/beta-test-mapset.html
This new variation of my “core” Forest Park map which uses a different approach to showing the topography and ground cover, more like the style of map in the popular Walk There! book (I had developed four possible styles for Walk There!, and the one that was chosen was my favorite).