My predictions:
Geras and Scorpion will receive a lot of nerfs and people will be supper happy/angry until two days into the patch when everyone realizes they are still on the top.
Erron will be nerfed and deemed abysmal, but will actually still be viable and a top 10 character.
Sonya, and Jaqui will receive small wristlaps that don't really change anything.
Sub zero will get a few nerfs, but the buffs he gets to compensate them will make him better than before.
Kitana will be horrendously overbuffed, and might end up being the absolute top tier for a while.
Jax will get small buffs.
Liu Kang will get small nerfs.
Cetrion will receive a million small nerfs that won't actually change her much. People will still complain though.
Skarlet will lowered to the bottom of the mid tiers, will still be good in specific match ups.
Kabal will be buffed and be just outside of the top 5.
Cage will receive changes that don't actually help him.
Lao will receive help, but nothing crazy.
Kotal, Dvorah, Shao Kahn: one of them will be brought to the top 10, one will be buffed fairly, and one will receive a lot of buffs that don't actually do anything and remain at the bottom of the barrel, along with Frost.
Most of the useless second variations will be buffed but remain useless(some might end up worse) , except one or two which will become viable.
I feel this is pretty in line with what NRS has done in the past.