Here's the list of stages we know are in the game so far:
-The Prison (MK4)
-Bell Tower (UMK3)
-Lumber Mill (MKA)
-Goro's Lair (MK-MK4)
-Subway (UMK3)
-Wastelands (MK2)
-Battle Arena (MK2)
-The Armory (MK2)
-Sky Temple (MKD)
-Reptile's Lair (MK4)
-Scorpion's Lair (UMK3)
-The Tower (MK2)
-Soul Chamber (UMK3)
-Living Forest (MK2-MK4-MKD)
-Hell's Foundry (MKD)
-Pit II (MK2)
-Blaze's Pyramid (MKA)
-A kind of "Lava Room" (see Reptile vs Bo'Rai Cho pic and Meat pic)
-We seen what some call Sindel's Throne too (see Meat vs Kahn pic)
So, there's 19 stages in that list and the only ones I did'nt saw to date are the Sky Temple and Living Forest. We presume Sky Temple is in the game only by looking the Shang Tsung and Liu Kang render. Living Forest is actually confirmed by Ed Boon to be in the game.
Apparently, it is said the Pit and Warrior Shrine might be in Armageddon too.

lookin good

i hope all of the levels have more than 2 death traps that would be awsome

we havent seen the pit 2 either. that was just in a render of sub zero and scorpion

thnx
cant wait to see all the new deathtraps

I heard that the pit 1and the warrior shrine(the way it looks in shaolin monks) is in it with every level from mk2!! And most of the levels in mk3 are in it!!

Can someone link me the one that is speculated to be Sindel's Throne Room?

* The Pit (MK1-MKT-MKD) (Not seen in any in-fight screenshots, but was featured in menu artwork, showing Scorpion and Sub-Zero in the arena).
* Goro's Lair (MK1~MK2~MKT-MK4) - without deathtraps
* Wastelands (MK2-MKT) - with a deathtrap (5 burning catapults)
* Living Forest (MK2~MKT-MK4~MKD) - Stated in an interview with Ed Boon.
* Armory (MK2-MKT) - with two deathtraps (a roller and lava)
* The Portal (MK2~MKT-MKD) - Seen in early screenshot featuring a random KAF and Sub-Zero.
* Kahn's Arena (Battle Arena) (MK2-MKT) - with 4 deathtraps (lava pool, acid pool, spikes and rollers)
* Subway (MK3~UMK3-MKT) - with the classical deathtrap (2 trains)
* Bell Tower (MK3-UMK3-MKT) - with a deathtrap (five spikes)
* Soul Chamber (MK3-UMK3-MKT-MKG) - shown in a versus screen featuring Darrius and Chameleon.
* Prison (Tekunin Warship) (MK4~MKG) - with a deathtrap (a helix on the rooftop)
* Reptile's Lair (MK4~MKG) Shown in a new screenshot featuring Frost & Shang Tsung.
* Wind World (MK4~MKG) or The Pit II(MK2) - Seen in a picture of Motaro and Sub Zero fighting.
* Sky Temple (MKD) - Seen in new artwork featuring Liu Kang and Shang Tsung on the official website.
* Hell's Foundry (MKD) - Shown in a video featuring Havik's trading kard.
* Lumber Mill (MKA) - Shown in artwork on the Armageddon site.
* Blaze's Pyramid (MKA) - Shown in artwork on the Armageddon site.
* Sindel's Throne Room (MKA) - Unveiled by Ed Boon at a recent interview. He also said that this arena will have the most deathtraps in the game.
Ed Boon has also stated that there should be around 40 different fighting arenas. If you want to confirm this, go to MortalKombatUniverse.de

the Wind World stage is not in the game it was confused with Blaze's pyramide
Sindel's throne room was never confirmed, I personnally think that this stage was the church from MK3

*sniff, sniff*
You smell that?
Smells like Wikishit...
Ka-Tra

May i ask which interview this was from and when it was?
My hope for The Deadpool returning, and more like its' bridge form (the exact same fighting arena dimensions of the Subway, at the very least) has brighter light to it now... YES.

Tekinun warship is also a map.

thats what the prison is.

I found a video featuring Quan Chi performing a fatality. The stage they are on looks like the pit 2 but the bridge itself is a full 360 circle like the falling cliffs from Deception. This could also be the wind world stage from mk4
http://www.youtube.com/watch?v=FMPZXDi6QZc

Yet again the living forest doesn't have a deathtrap in it Also wind world is not in MKA (I hope to god it isn't anyways, I hate that arena). Also like Tetra had said, this sounds like some shit from wikipedia regarding there being 40 arenas. I hope there's 40 arenas but i doubt it though.

I always thought the Living Forest was the worst Kombat stage of them all and I didnt know why they kept bringing it back. The BGM of the Living Forest from MK2 however is awesome :D

fuck where is slaughterhouse????????? THis arena MUST be in MKA:/