Jimmy Kimmel took to his Twitter page earlier today to reveal that Robert Downey Jr. and Chris Evans will be appearing on tonight's episode of Jimmy Kimmel Live!, where they will present a "big surprise" for Captain America: Civil War. While we don't know for sure what will be unveiled, it's entirely possible that it may be the first trailer. This reveal comes just one day after several cast members from Star Wars: The Force Awakens appeared on Jimmy Kimmel Live.

While it's surprising that this announcement comes just hours before the show airs tonight, this may be in response to a huge Marvel leak that happened around this time last year. Marvel announced plans to debut a new trailer for Avengers: Age of Ultron during an episode of Marvel's Agents of S.H.I.E.L.D., but the trailer leaked nearly a week early, leading the studio to officially release it shortly after the leak. It's possible that the studio wanted to keep the Captain America: Civil War trailer under wraps for as long as possible, but then again, we don't even know for sure that the trailer will be unveiled tonight.

Last month, a report surfaced that the first Captain America: Civil War trailer will be attached to prints of Star Wars: The Force Awakens, but that was never verified. That report also didn't indicate whether or not the trailer would debut online before its theatrical debut. Still, since Disney owns Marvel, LucasFilm and ABC, the network Jimmy Kimmel Live! airs on, it all fits in with a strategy of corporate synergy we've been seeing for the past few months now.

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Earlier this month, Disney used ABC's popular "TGIT" Thursday night lineup to unveil new footage from Star Wars: The Force Awakens, and the final trailer for Star Wars: The Force Awakens debuted during halftime of Monday Night Football, which airs on the Disney-owned ESPN network. Back in March, Marvel also released a trailer for Avengers: Age of Ultron during an episode of ABC's American Crime. The studio has also had plenty of tie-ins for the Marvel Cinematic Universe on ABC's Marvel's Agents of S.H.I.E.L.D. and Marvel's Agent Carter.

Captain America: Civil War picks up where Avengers: Age of Ultron left off, as Steve Rogers leads the new team of Avengers in their continued efforts to safeguard humanity. After another international incident involving the Avengers results in collateral damage, political pressure mounts to install a system of accountability and a governing body to determine when to enlist the services of the team. The new status quo fractures the Avengers while they try to protect the world from a new and nefarious villain. Will you be tuning in to Jimmy Kimmel Live! for this Captain America: Civil War surprise? Check out Jimmy Kimmel's tweet below, and stay tuned for more on Captain America: Civil War.