Advanced Drone Scans (Nano Drones) can retrieve information about the enemy fleet, but only if they are moving. You will see what the eta of the fleet is, as well as any units the fleet is made of. You will not see where the fleet is heading, and thus need to determine which fleets are heading where with the help of the news scan.

Note that the Advanced Drone Scan is the only scan that will show cloaked units!