A week ago Esri released an update to our Terrain Image service on ArcGIS.com. A major aspect of this was adding a multi-directional hillshade function (this has it’s own content item ). In ArcGIS Desktop, this service can be used with color ramps that you chose to have different tinting schemes.
But the important thing is that it achieves something I’ve wanted to see for a long time which was to effectively portray the character and definition of the terrain in the illuminated areas as well as the shaded areas. In my opinion, this is one of the most exciting things we have done in quite a while.