This update focused on a lot of things behind the scenes that you indirectly see.  In the .7 update, Windmills, Turrets, and several other features were tested.  In .7.2, these features have become mainstream and have been added to the level editor.  Level 1-1 showcases all of these features.  As we move closer to publishing, we've tried adding some polish to the game.  (Please checkout the bouncing win screen when you beat a level, that alone took 2 hours to implement).  Also you'll notice that in the Forest World, the art style is different.  The Gravity Ballz team has given up on hiring an artist, so we are trying out a minimalist art style.  It can almost be guaranteed that none of the art you see will be in the release.  Please disregard the big gear on the homescreen, that is the level editor which currently only works for developers (It's on the todo list).