A House Divided Against Itself Cannot Stand
Marvel is not waisting any time promoting its post Civil War event. With the Marvel Universe divided against itself after the events of Civil War it will take a certain Captain to bring it back. Marvel released this image with the quote "A House Divided Against Itself Cannot Stand" which is a direct quote from Abraham Lincoln he used during the Civil War.
With the shocking news at the end of last year that Steve Rogers has been working for Hydra the entire time it may be that the Marvel Universe will find out there are a lot more working for Hydra.
Secret Empire has been used in the Marvel Universe before during the 1970's also in Captain America comics. Secret Empire was a secret organization led by the President of the United States. We will have to see if this has any ties to the old Secret Empire.