User blog comment:Ark F. Scene/Kharacter Roster Theories and Possibilities/@comment-4809082-20140616011935

Nice compilation of info. Thinking a little bit, it is possible that Bi-Han, as the non-canon ending for Scorpion on MK:DA, was purified by the Soulnado, since it is connected to Heaven. By doing this, it is possible that he was brought to life by some reason, but as Sub-Zero. I don't know about Johnny and Sonya, maybe they will appear on the timespan of 5 and 10 years, but I really believe that 25 years after they won't.

This interview of Ed to TRMK (as seen on Gamer68 blog) saying we will see a MK4 character, I will bet on Reiko or Shinnok, only on cameo.

And I'm saying this because 25 years of timespan is too much time to be still waiting for Shinnok invasion, this is probally planned for the 5 years after MK9 (MK4 happened a few years after MK3).

What I think? 25 years is enough to the Dragon King's prophecy to be complete.