my first aplication in arcgis 4.0 beta - Interactive virtual tour to Bulgria
In this example You may find among others :
Synchronization between two different maps.
Opening a pop up window dynamically with a Clicking on the map.
drowing rout (like KML).
Changing point Graphics .
Using Texst Symbol
Changig basics maps
New navigation control
Friendly map user interface.
and many more tools