I don't have the game yet (it's not out in Europe until next month), but already I've caught sight of the main spoiler regarding Noob Saibot and how he is in fact the original Sub Zero.
I've had suspicions about this sort of thing for ages.
It started way back when I played Ultimate Mortal Kombat 3 on the Sega Saturn. I remember there was a special Kombat Zone which was a blue version of the Portal called
Cisslac Busorez
Realizing that this was written and made up exactly the same as Noob Saibot, I figured that Noob and Classic Subzero were connected somehow. Delving deeper into this mystery, it occurred that Noob Saibot made his first appearence in MK2. In this game, he is a hidden fightable enemy alongside Jade and Smoke.
When you performed the requirements to fight these hidden characters, a message was shown alluding to the fact that these secret characters were also present in the MK1 tournament. In MK1, Reptile was hidden. but once he was found numerouse glitches could happen - which is what I think Jade and Smoke were referring to. Noob however is different...
I knew he HAD to be in the MK1 tournament, but all the MK1 cast were accounted for - everyone was in the game with the exception of Sonya and Kano who were tied up... but then it hit me!
In Sub Zero's ending it explains (what is well known now) that the original Sub Zero was killed and that he was his younger brother. I GUESSED way back then that Noob was a specter, much like Scorpion, of the man who used to be Sub Zero (figuring the wraith thing would work both ways).
---
Anyhow, that was all in the past. I often come up with theorys for people or characters in MK (as do many of you I've noticed), but this is the closest I have ever been just guessing and thinking, but come on, surely I can't be the only one who figured it out in advance.
Did anyone else 'realise' who Noob was before the truth was officially revealed?
Peace!