There are quite a lot of Mortal Kombat Annihilation rumors on the Corona Films
website. All of the information on their page is considered to be "scoop" material, i.e. rumors. Some of these rumors are: Scorpion and Sub-Zero have a fighting sequence, an important character gets killed in the beginning (my guess would be Cage), Ryan Cortez will play as Rain, and the story line will setup MKM:S-Z. Whether or not this information is true or false is yet to be determined. I myself wouldn't consider these "scoops" as concrete facts.