It supprts vector editing including pionts (labels and markers), polylines, polygons with holes, circles, ellipses, and other shapes. It also supports cameras and animation. One of the cool things Matt showed was a camera following a satellite. And perhaps the coolest capability is materials which alows you to define the appearance of the surface of objects using textures such as water, checkerboard, stripes, dots, brick, cement, asphalt, wood, grass, diffuse map, specular map, reflection, and refraction.
Functionality that Cesium already supports in beta and that looked impressive in Matt's demonstration is digital terrain models. Functionality currently under development are
- Models - the example shown was a rubber duck
- Integration with other open source packages - the example shown was a plugin for GeoServer