James Gunn has confirmed 'Guardians of the Galaxy Vol. 3' will be released in 2020. Gunn recently confirmed 'Guardians of the Galaxy Vol. 3' will "kick-start" the new Phase of the Marvel Cinematic Universe. Gunn's news comes on the heels of comments from Marvel boss Kevin Feige, who revealed the fourth 'Avengers' movie, slated for a 2019 release, will signal the end of the MCU's Phase 3.