Ok , everything is still rumors until its confirmed by gameplay, video, or official renders and interviews. (even all that stuff can change).

All the talk about this character or that being confirmed is pure bullshit. Like a magazine is never wrong. Not to mention alot of these magazines are foriegn and the langaueg gap alone may have caused some things to become inconsistant. For example all characters are confimred for Konquest, some characters may only be playable in chess mode, or puzzle mode, and this may have caused confusion. Secondly, all of this can change! with the hype surrounding this game midway may want to mislead the fans a bit, lets face it this is the biggest MK event since MK2.

So far the only characters I will accept as "confirmed" are as follows.

Mileena
Baraka
Sub-Zero
Scorpion
Nightwolf
Li Mei
Bo Rai Cho
Ashrah
Hotaru
Ermac
Kenshi
Sindel

The above Characters are certain, they have renders, video, fatalities and they are on the select screen.

Other Characters which I think we can be pretty sure of are..

Noob (we have seen renders of him and a few screenshots, nothing major just a few things here and there

Kobra/Ben/Ken/Cobra
Same as Noob.

Kira (Boon has talked about her)

"Skab" So far we've seen one render. If this becomes a fully playable character with story and Fatatily, is yet to be seen, chances are good, but again these are table scraps, nothing solid like gameplay footage.

Questionable Characters

Smoke
Kabal
They have been talked about in interviews.

That makes 16 we can be absolutely sure of, with two others simply mentioned in interviews. 18. Thats still quite a bit shy of 24.

I really don;t think we can count the following yet.

Liu Kang.
Killing off Liu Kang was a great move, it allowed the story to advance quite a bit. I doubt Midway would go back on this> It also seems unlikely that a chost or Zombie would be a fully playable character. This just doesnt seem right. The Ghost of Liu Kang may appear in Konquest (as every character is appearing there, even stryker). One poster even admitted to faking the Liu Kang Render. I mean, Midway Generally just brings back Chacters, it seems unlikely and not their style to start with Zombies.

Tanya.
She was breifly seen in a puzzle kombat/chess video. So what ? So was Kitana and so was Quan Chi. Those are test Chacters. Since MKD has a very similar engine as MKDA Its a pretty safe bet that in early stages they used old characters and probally made a bunch of models, even of chacters in way past games. Obviously as the game is refined these test models are dropped and the real chacters are focused on. Tanya also was wearing her MK4 costume, down to the letter. It seems pretty unlikely she'll be a fully playable character with fatalities. Also we have seen absolutely nothing new about Tanya.

Jax.
This one is alot more possible than the above characters. Howwver, how much have we really heard about Jax? I know a midway panphlet said he was in the game, but did it say as a fully playable, main fighting character with fatalities ?

As we've learned with Past games, stuff thats shown early on often turns out tweaked and changed around, and also as we've found out, magazines, esspecially magazines that have articles written early on can often be flawed. We have yet to see a really solid issue of an english magazine with solid confirmed info, alot of stuff has complied from rumors and that april edition of a german magazine, which at the time was seven months before the release.

Finally keep in mind that there is still 4 months left and changes could still be made.

Just trying to tell everyone to keep in in perspective a little.