I noticed that there are 2 boxes left in the levels section of Kontent. I don't know if they are there for nothing or actually hold levels.
The Ice stage is probable, if so.

I saw that level in a magazine...a concept of it anyways..and was like DANG! I WANT!
Not sure if it is in the game, but did you notice in the Kontent section there is a render of an arena called the Ice Catacombs? I think that is what it is called. Anyways, the info on it says something like "Ahhh..the ice catacombs..you won't see them now, but maybe sometime later!"
I am sorry, I don't have my game disc on me right now, but it was something like that. I wonder if it is the same stage, and I wonder if later means another MK or this one in a time lock....who knows.

Nah bro the message in kontent says
"I dont want to give to much away, but hopefuly youll be fighting here soon"
Really makes it sound like its hidden..

The message boon wrote makes it sound like it will be a stage for MK7.
I hope they do that for the next game, have the ice worm, or the dragon stage fatality.
To make it more dramatic, they could make it so when you land in the worms mouth, you try to climb out, but you still die.
The dragon stage fatality could be that maybe have a stage by the sea.
And you can knock the opponent off the edge.
But there could be 3 ways for the opponent to fall off depending on the attack used to launch them.
1 = a weak attack will make them stumble off the cliff and roll down slamming in to the jagged rocks. They don't need to land on a spike, just have them break their head or have some rocks fall on them after ward.
They could use the cliff hanger concept found in the Krypt in MKD.
2= you launch them off the edge and the dragon pops out and snatches the guy out of the air.
3= You knock the opponent off and they land in the water, you see the dragon swimming around and a meter appears, you mash the buttons as fast as possible to swim to the shore.
If you are too slow the dragon will catch you under water. If you do get to the shore, you climb up and look at the water to see if the dragon is chasing you. Then you think the coast is clear, you turn to walk away and the dragon comes out of the water and tries to bite you but he misses the first time, then the second time he bites the opponent and shakes them around like in Liu Kangs fatality in MK4.
Then 2 things can happen at random while the dragon is shaking them in it's mouth.
1 = the fighters legs fly off and the dragon goes back in the water.
2= The dragon throws the opponent back in the water then follows and eats them.
That could be like a secret or special stage fatality.

It's called the Frozen Katakombs. It's the home of Sub-Zero's cryomancer ancestors, where he buried Frost, and got his primary armor. I hope to hell this is unlockable.
Ka-Tra