User blog comment:ADour/Official title for Marvel's The Avengers sequel announced!/@comment-1895174-20130721051824

In addition to that artwork, Marvel also confirmed some cast updates for GotG: src
 * Glenn Close's character is confirmed to be Nova Prime. Theories that she and Reilly's Rhomann Dey are the Fury and the Coulson to the Guardians' Avengers now seem to be accurate.
 * Djimon Hounsou is portraying "Korath". Dash your hopes of him portraying Black Panther.