Midway has released a new high-resolution render of Captain Marvel from the upcoming Mortal Kombat vs. DC Universe. The WorldsCollide.com website lists the character as Shazam, which is appears to be incorrect. The character Shazam is a wizard and DC Comics appears to market Captain Marvel under the "Shazam" label. Granted the confusion is high, but this entry in Wikipedia explains the name "Shazam".
Because Marvel Comics trademarked their Captain Marvel comic book during the interim between the original Captain Marvel's Fawcett years and DC years, DC Comics is unable to promote and market their Captain Marvel/Marvel Family properties under that name. Since 1972, DC has instead used the trademark Shazam! as the title of their comic books and thus the name under which they market and promote the character. Consequently, Captain Marvel himself is sometimes erroneously referred to as Shazam.