This video shows first impressions of the mapeditor on the Xbox 360. The developers talk about the usage of the editor and how you can form such wonderful landscapes.
The editor looks really overviewable and easy in it's use and the player can join directly into the game like the Sandbox Editor of Far Cry. Here is the first Map Editor Video on IGN.
The second one is a short developer interview, also about the map editor on IGN.
Related Links: IGN Mapeditor, Preview
