It's the same just they seperated the Road Course fromt the drag strip, added run off areas to some turns, a real pit lane, Garages for Teams to work on their cars, Put bleachers all on one side of the drag strip, and moved all the buildings around. The whole course is literally brand new concrete, they ripped all the old crap out, and it looks like the very back turn (top left on that map, goes left off the big straight) has been made into a longer bigger turn from what I've seen when I drive there to look at it(I also here about some banking maybe being placed on it).