Ok this is just a summary of what those guys are saying on their twitter, I have found on UMKU.
On the final roster number:
"I think its 24, but that could change. We'll have to wait and see"
On Rain
Who said Rain isn't in the game LOL he is in the game, not just in story, but playable too
"I knew he would be in MKX, he most likely will be playable."
"most likely will be, if not from the get go then as DLC."
"You'll be the first to know. I will also be posting news, etc on my YouTube channel
https://www.youtube.com/channel/UC..."
"Rain is making a comeback and has cool costumes and variations"
"And if he doesn't make it, then I should apologise haha. But I doubt that's the case. I love Rain too" (notice how he says he's in, claims to know what his costumes and variations are, then shows doubt in his own knowledge, but it's ok guys, he'll give you a sorry if he is wrong...)
On Rain possibly being DLC:
"Ed Boon is also Ed Boon, you know, the one who loves to troll people and shit LOL"
"And I also mentioned a week ago that Rain was going to appear in MKX and bam he showed up in the story. So just keep an eye out." (how reassuring, he predicted Rain's inclusion after he showed up in the comics...)
On Liu Kang, again:
"Apparently if you watch the story trailer and listen towards the end of the video you'll hear Liu Kang's voice. Not sure yet."
On Baraka:
"I'm not sure though, maybe as DLC bcoz list is almost full" (another he doesn't know)
On Tremor:
"He'll most likely be in the game"
On Fujin:
"Probable"
Does it sound legit to you ?
They must be proud of the mess they are making on the forum with all those lies...