Version 2.0 includes a new terrain generation engine designed to generate “large worlds of great detail”. You can import elevation mapping images, use internal drawing tools, render hundreds of thousands of trees, and warp the terrain in real time.
The next version will also provide optimized dynamic shadow generation. Unity 2.0 supports point lights, directional lights, spotlights, and also alpha-textured objects for accurate shadow casting.
Unity’s GUI system has been revamped with dozens of object types including buttons and text labels, available as a CSS style template. The ability to play video over 2-D and 3-D objects has also been added, as well as a new Unity Web Player streaming player.