The image shows the silhouette of an unidentified figure wearing what appears to be a billowing cloak.
It is accompanied by the words, "I strive for redemption".
Secret Avengers is the second Avengers title planned for the 'Heroic Age', which promises a lighter approach to superhero comics following the grim 'Dark Reign' and 'Siege' storylines.
Secret Avengers - written by Ed Brubaker (Captain America) and illustrated by Mike Deodato (Dark Avengers) - will debut in May.
