Are Gaia Gear and Gundam related? This doesn't look like any Gundam I know about, but all the Gaia Gear-tagged pics are also tagged Gundam. I'll leave the question of removing/keeping the Gundam tag to someone who knows more about the subject. Just pointing it out.
he's probably referring to how the Zeta movies ended. based on that ending, it could change much of UC. but Bandai nor Tomino has said if its a canon ending or not so i don't expect ZZ or CCA to be retconned anytime soon.