The next time you boot up Dota 2, you might notice that some stuff looks a bit different.
How different? Well, Roshan's moved, yes. There are also a bunch of smaller new paths which you'll want to be aware of, especially since the changes might alter where you put wards and such, as well as how you move around the map.
DotaCinema here has a comparison video which takes the old map, and compares it to the new map—useful stuff, if you're wondering about the changes!
Dota 2 - 6.82 Map Changes (Old vs New) [DotaCinema]