All this data is potentially out of date, and should be taken with a truckload of salt
The Heron is a basic probing and exploration ship, often used due to its disposable nature and cheap cost. Many new Caldari explorers will use this ship for those reasons. The description of this ship does not lie, and one should not expect to take this frigate into a combat zone and survive. It is instead best used to probe and lead larger elements into the fight.
Below are additional ships images. Click the image below for a larger version: