If Cyclops has any real role in the film at all, he undoubtedly was. In fact they might have done just that, filmed only 2 of his scenes before due to Superman time crunching, and filmed the rest of his scenes during the reshoots. Reshoots wouldn't be in the trailer we just saw, they'd still have to be tended to, so we wouldn't see any really.
Real Name: Arkady Gregorovich Rossovich
Affiliation: None
Alternate-X Versions: Rossovich (Age of Apocalypse)
Codename Etymology: Pronounced ô-mĕg'ə rĕd [From Greek ômega "large O", From Middle English rçad]; The ultimate Russian.
Powers & History: First of the Russian super-soldiers, Omega's mutant power is to release a death-spore virus that can kill across a moderate distance. He was outfitted with carbonadium (a malleable form of adamantium) coils that extrude from his forearms and are fully prehensile. His death-spore needs to be controlled by a device called the carbonadium synthesizer; the loss of that object thanks to Team X agents Creed (Sabretooth), Logan (Wolverine and North (Maverick) forced the Soviets to put Omega on ice. Due to Wolverine's part in forcing him to be put in suspended animation, Omega Red hates him passionately. He was later revived by Matsu'o Tsurayaba and the Hand, and now works alone. Apparently, Rossovich was a serial killer years ago, and was hunted down by Banshee, who was forced to shoot him. This allowed Rossovich to fake his death, freeing him up for his Super-Soldier transformation.
Recently Omega Red teamed up with Lady Deathstrike to attack Wolverine's allies and friends, among them Yukio.