For MKHD, all the stages are done and what is left to do is the characters and coding. It's going very slow, but hasn't stopped.
The characters with animations now are Scorpion/SubZero/Reptile, Johnny Cage, Raiden, and Liu Kang.
Some of the other characters have been made, like Shang Tsung, and Goro, but not animated.
Kano and Sonya have been started several times by different people but never got to the animation or texturing stage.