There’s a report going around the internet claiming that Guardians of the Galaxy, Vol 3. would film next year (2020). Tonight James Gunn confirmed when the movie will film, and it doesn’t sound like it’ll be next year.
Gunn is currently working on Suicide Squad 2, and confirmed that he’ll finish that movie before moving on to Guardians:
Sorry to disappoint. Guardians Vol. 3 IS happening, but I am finishing The Suicide Squad first. ❤️ https://t.co/gFodDqiDvl— James Gunn (@JamesGunn) July 21, 2019
As Squad 2 is a 2021 release date, it likely means we won’t see Guardians 3 filming until after that release, which means it’s probably one of the three 2022 releases that Marvel has scheduled.