Marvel's latest installment of Captain America: Civil War is yet to hit the theaters but this early, the studio is already teasing of a sequel. Reports have surfaced that Marvel has been sending out postcards with curious messages.

One of the comic book retailers who received such postcards is Ryan Higgins who posted on his Twitter account a photo of the front and back of the card, showing clearly the Roman numerals as well as a date: Spring 2016. Interestingly, should Marvel decide to release a sequel to Captain America: Civil War, then the next installment will be finished around the time the first Civil War is shown, which has a release date on May 6, 2016.

The postcard shows Iron Man, a.k.a. Tony Stark (Robert Downy Jr.), battling the current Captain America, Sam Wilson aka The Falcon.

A separate report by Comic Book Resources said Marvel remains mum on the postcard. However, Marvel is known to push for a comic edition that has a connection to a movie that it is scheduled to release. Before the release of Avengers 2: Age of Ultron, Marvel published the Rage of Ultron comic book.

The original Civil War shook the Marvel comic book universe as it drew the line amongst our heroes, where friends became enemies and even the Fantastic Four separating into four different directions and splitting families apart.

A second Civil War may also be a big gamble for Marvel as Sam Wilson as the new Captain America has received lukewarm reception from fans of the comic book unlike when Steve Rogers (Chris Evans) is still donning the Captain America uniform.

Captain America: Civil War in Intense Filming Lockdowns

Meanwhile, Elizabeth Olsen who plays Wanda Maximoff a.k.a. Scarlet Witch, has revealed that Marvel has imposed a very strict lockdown to protect every detail of the upcoming movie from spilling to the public.

Olsen was quoted as saying, "When you get the pages that you're filming that day, you're not allowed to take those home with you. They account for everyone at the end of the day and then they shred it."

She added, "I took this one photograph, it was actually on (Civil War). Barry, who's our security guy and is amazing, he can detect a paparazzi from like a 15-mile radius. He's incredible. Obviously he can't lock down public streets and bridges and things like that, but he locks down everything he can. I have this photo of Jenny my movement coach and I posing for a photo on my phone, and then in the background we asked Barry to try and interrupt us and scream at us. They have a zero tolerance policy for releasing photos on a set. It's pretty serious - you feel like you're doing something for the government and you're making a movie."

Ant-Man Gets New Suit

The smallest hero in the Avengers team, Ant-Man (Paul Rudd), will be getting a new suit in Captain America: Civil War. A new Japanese promotional material for the Captain America sequel revealed the suits of the Avengers in the film, said MXDWN.com.

Ant-Man's suit has been redesigned to rival Iron Man's suit. It is noticeable that the red lines on top of the helmet have been removed with the bottom jaw linings merging to one single mouthpiece instead of three. The new suit also shows more armor around the neck shoulder and chest.