According to director James Gunn’s twitter feed, Collider Frosty did some great detective work, enough which Gunn responded to what Frosty posted on twitter, guessing the title to the sequel! The working title for the film is: Guardians Of The Galaxy Vol. 2, paying tribute to the cassette tape that Star Lord has “Awesome Mix Vol. 1” that he jams throughout the movie, he also receives “Awesome Mix Vol 2.” at the end of the movie.
— James Gunn (@JamesGunn) June 29, 2015