ok heres what we know so far
Dormammu has also been confirmed to be in the game, based on his Defenders Vol. 3 appearence, but it is unknown if he is a playable character or the game's villain and final boss.[12] Characters confirmed by Niitsuma to be absent from the game have so far included the monsters Tyrant and Nemesis of the Resident Evil series, citing concerns that their inclusion would change the game's content rating, as well as the primary members of Marvel's Fantastic Four, who were excluded at the company's suggestion for currently undisclosed reasons.[13] However, the more recent announcement of Super-Skrull means that all of the Fantastic Four's powers will be available in one character, thus explaining their omission. Seth Killian has stated that Amingo will not appear.[14] Other characters confirmed to be absent by Niitsuma include Daredevil, Emma Frost, Gene, Ghost Rider, Punisher, Phoenix Wright, and characters from Rival Schools and Power Stone.[15] Niitsuma has also stated that about a third of the potential roster will consist of characters who did not appear in Marvel vs. Capcom 2
confirmed characters
Captain America (Classic attire)
Amaterasu of okami fame
Deadpool (Classic attire)
Chris Redfield (Resident Evil 5 attire)
Doctor Doom (Classic attire)
Chun-Li (Street Fighter IV attire)
Hulk (Classic Savage appearance)
Dante (Devil May Cry 3 appearance)
Iron Man (Extremis armor)
Felicia
Super-Skrull (Classic attire)
Morrigan Aensland
Thor (Reborn armor)
Ryu (Street Fighter IV attire)
Wolverine (Astonishing X-Men attire)
Trish (Devil May Cry appearance)
This is the characters we have either seen as a picture or being played or in the promo video

Looks like veiutiful joe on the far left
no idea who that is next along. Could it be the okami wolf in some dodgey stance? If you have a clue or seen it discussed anywhere give me a buzz. Felicaia maybe?
Trish of DMC
Chunners of some little game called street fighter or something.

from left to right
Captain america
Dr doom
Possibley spiderman (the way his hand is on the side of his head is kind of a classic spidey stance)
and super skrull (the one with the fantastic four powers)
Things ive noticed.
Ryu is his own character. By that i mean he does not have the ablity to change how he moves like in Marvel vs capcom or MvC2. This was brought in so people could use him like ken or akuma since they were abscent from the rosta in MvC but even though both ken and akuma made there apparences in MvC2 the skill stayed. In the videos ive seen this skill is not been seen which means either they intend to drop another shoto character in to keep ryu more like ryu or less likley is that they have barred the move sets from the demo versions which were played at Comic-con. Which I doubt. it could mean they just want to keep there main character (capcoms poster boy) more himself and they could fill the rosta with lots of strange characters.

thor and the outlines of many characters
Capcom and marvel sure are milking there uveiling of the characters for **** ages they do have the better part of three quaters of a year to get people hype though. I really do hope we see some more characters.
Its way too serious this game so far. The only characters who bring that zanny feel would Viewtiful joe (i'm farily sure its his shadow there) and Deadpool is able to do a Shōryū-ken like he did to kitty pride in the comic.
I would like to see Squirrel girl and Dan hibiki. How awesome a team would Dan and deadpool make? Shuma Gorath is my all time fave character from the marvel vs capcom series. 1# choice with japanese fans too apparentley.