Introducing Echo. An evolutionary robot programmed with a rapidly adapting artificial intelligence, Echo represents the cutting edge of technology.
Does this mean that Echo will possess some extraordinary abilities? It seems that time will tell, but judging by the origin story, it would be a rather interesting-to-play character than just another char forgotten in the memos.
Echo is supposed to be the next support hero in Overwatch. According to the Overwatch Wiki, Echo is a Robot that has a face which is a holographic projection.