Currently Guardians 3000 is the working title for the 2017 Guardians of the Galaxy sequel. Odd working title to give a movie when you are publishing a book by the same name.
Guardians 3000 is the name of a Marvel comic book featuring a team of original Guardians of the Galaxy. Rumor has it some additional Guardians will make it into the movie. Could it be member of the original team now staring in Guardians 3000.
With that said it’s possible that the futuristic 3000 continuity won’t be acknowledged. However, the reference in the production title could indicate that more heavy hitters from that lineup, besides just Michael Rooker’s Yondu, may be set to join the team of Star-Lord, Gamora, Drax, Rocket Raccoon and Groot. In fact, the heaviest of all these hitters in Vance Astro, or “Major Victory” (wearing the black mask in the below pic), who might be someone destined to add to the cinematic team’s dynamic. Depicted in the future-set comic series as essentially an unfrozen contemporary U.S. Air Force pilot-turned-intergalactic hero of the future, Astro is often the default leader of the Guardians of the Galaxy team. Armed with psychokinetic powers, his storyline parallels to Captain America are rather apparent, even to the point that he eventually inherits Cap’s shield.
Lance Astro first appeared in the now famous Marvel Superheroes #18, which features the first appearance of the original Guardians of the Galaxy.