I think the line up will be:
USF4 (lock)
UMvC3 (lock)
KOF (high chance)
SSBM (high chance)
IGAU (toss up)
KI (lock)
DOAU/TT2/SCV (???)
Could be there if announced:
GGxrd
For every Evo they have always had at least one 3d game, so DOA has a pretty good chance. TTT2, one of my favorite fighting games, surprisingly could have a chance as well...it's pretty much a toss up between SCV, TTT2, and DOAU. Which ever the staff feels will have the most entrants and international representation will take the spot.
Another thing is that mk9 could have a chance if the staff decides not to have a 3d game this year (although there's only one time that I can recall were there wasn't a 3d game on the Evo lineup...going to say 2003 or '02 but I could be wrong). Either way, mk9 can still have a side tourney even if it's not announced.
Injustice was definitely in a tight spot. It had a lot of build up prior to Evo, getting stream views in tournaments equal to UMvC at majors when it dropped. Evo 2013 was reminiscent of T6 grand finals. Tekken wasn't able to bounce back, add to the fact that SCV was released so it was dropped. Although I doubt this will happen to injustice, unless they dropped it for mk9 (but mk9 has had considerably less entrants).
I think injustice has bounced back quite well, and unless anything ground breaking occurs it should make it. I also want to include injustice had a surprising number of international entrants for Evo 2k13 as well. I can't say it will be the same this year, but you never know.
I feel KI will be a lock, due to Microsoft's involvement in Evo. I also feel KI will have some international appeal as well, so that might be considered as well.
On the last note, I would love to see another anime fighter included to the roster. Although I don't follow their scene closely, P4A was considerably entertaining to me last year, and the US got a lot of wins in top 8 against international players than I thought they would. Any anime fighter would be fine.
Another NOTE: The evo staff could try to do a throwback and bring MvC2 on to the mainstage. It wouldn't seem like a long shot considering how ECT bringing it back was amazing to see.
tl;dr: Injustice has a good chance. Mk9 even if it doesn't get in can be a side tourney. Would love to see another anime game. KI is a lock imo