I will start this off by saying I was the one who leaked TMNT and Enchantress being the other characters in Fighter Pack 3.
https://www.gamefaqs.com/boards/191336-injustice-2/75925069
https://www.gamefaqs.com/boards/191336-injustice-2/75925069/889752340
So if you want to quickly disregard that I have sources or what I am about to say, at least take what I am saying into consideration before you quickly doubt it. I have multiple sources and for multiple things and developers, so if you're wondering how I am knowledgeable of these things, I cannot quite get into that, but what I do allows me to have these contacts. I will split this into sections by company.
CAPCOM:
Street Fighter V: Arcade Edition:
Season 3 characters include Sagat, Sakura, Cody, Sodom, 2 newcomers (I heard 2 Final Fight newcomers from one source, but Roxy and a Shadaloo Doll from another)
There will also be free characters added as part of the update, which are Crimson Viper, Q, Necro, and Oro.
Critical Arts were supposed to be added upon its launch, but I am hearing they are probably saving it for later. Color Edit Mode is something I was told that's going to be a new feature added. Those concerned with input lag, those fixes will most likely not be added until Season 4 or around halfway in to 3 to implement. If you did not know, Unreal Engine 4 only recently put out the update, and it requires quite some time to fix. It would take somewhere around half a year (maybe more) to both port and then debug everything. The backporting is not the hard part, it's debugging that is so time consuming. The same thing applies to other fighting games that currently use it and have issues with it like Tekken 7, and even Dragon Ball FighterZ, and Marvel vs Capcom Infinite are included having it and needing updated, but will take time to do. The whole process takes time.
Marvel vs Capcom Infinite:
Season 2 as of the last update I heard from various sources compiled together will be Star-Lord, Ms. Marvel, Asura, Gill, and Lady, but the last character is one not everyone I've heard from has been able to agree on. There being multiple characters in development is likely to blame. The majority of them say Rashid while others have said Regina and one even said Apollo Justice.
Here's where things get really interesting. All the characters that I've heard that are in development (to various extents and from multiple sources, but not all saying the same things I might add, which is something strange in and of itself) include: Star-Lord, Ms. Marvel, Green Goblin, Wolverine, Cyclops, Psylocke, Magneto, Storm, Deadpool, Doctor Doom, Daredevil, Asura, Lady, Gill, Rashid, Captain Commando, Nina, Deis, Regina, Gene, Vergil, Akuma, and Apollo Justice.
I did notice the curious aspect of that being 11 Marvel characters and 12 Capcom. Which would line up with the current unevenness. But when you add it all up, that's 23 characters, not 24. Meaning there's still a Capcom character I don't know about, since adding these all up carries it all the way to Season 5 if it's all in fact true and all the sources are correct in different ways.
Four player 2 vs 2 mode is being added to the game, but I'm not sure when that is exactly going to be implemented.
I will say that despite the controversies with Marvel and the Fantastic Four in games lately, I haven't heard anything regarding scrapping Doom completely from the plans. While he isn't in the plans for next year from what I've been told, it's not conclusive as to his exclusion in the long term.
I guess it could be up to some people's interpretation what that means since he's not being added next year despite his popularity and all, but I wouldn't look too far into it just yet.
This next section for MvCI gets absolutely wild and so I am dedicating its own section to it. I have one source that's told me some stuff that I feel I have to share in the event it is true, but it is pretty out there. Do not take me as backing all of this either. I'm just putting it out there in the event this has ANY TRUTH TO IT later. They claim the game will get a free update sometime around the summer of 2018 that adds Deadpool, Wolverine, Daredevil, Akuma, Gene, and Vergil as free characters.
I will add that I was told by that same person that Regina was originally axed similarly to Ant-Man since both were actually planned to make it, but things came up that resulted in their discarding. Ant-Man in particular was due to technical issues like Frank West's on MvC3. I'm not totally sure what Regina's issue was, but I was told half jokingly that "it might be because of too many gun users." In spite of that, Ant-Man and Regina could pop up as DLC down the line since "some degree of work was done on her at an earlier point," and supposedly was picked back up on from what I've been told in Regina's case notably. And I was told she would/is going to be used to kind of crosspromote a Dino Crisis reboot. No one told me anything about Ant-Man since he was scrapped. But if the work is done and they wanted to approach him differently, I don't see why he couldn't make it back in. I've just heard nothing in regards to it yet. This same source was the only one who told me about Apollo Justice, which they claim is "unique" and utilizes Athena and Trucy in his moveset to some extents.
They go on to claim game is also going to get some kind of patch to fix the graphics and art style to improve the visuals. The UI is included in things being touched up with that.
When it comes to the roster, their goal is for MvCI to have "between 58 to 60 characters." Some things they're looking into adding include a Tournament Mode and a playable and balanced Ultron-Sigma patched in. A noteworthy thing about that is that they have some idea where you can have a boss character be your assist to compensate for no second character when playing as Ultron-Sigma.
Some more story-related content is of course being planned, with additional content being added to the current story mode, and a brand new one announced at SDCC 2018, with plans of that new story stuff being added sometime around late 2018 to Spring 2019 at the absolute latest. I'll end this section by throwing in something strange (if what they claim wasn't already) that I was told of by that same source, and it's so dumb that if it is rooted in fact, I am utterly stupefied by it. They say that early on, Capcom apparently wanted a Power Stone character. In particular Edward Falcon or Rouge, but they were specifically set on Falcon. Marvel ultimately turned him down because "they didn't want confusion with their Falcon." They said that for whatever reason, Capcom didn't fight them on it (which comes as no surprise there given how the roster turned out if this is true) or decide to go with Rouge instead as the Power Stone rep. That's all I got from that source, so now I can finally move on from this game's section.
Resident Evil 2 Remake:
It is a third-person game. You should finally see something from it next year if they don't put something out around the very end of the year, but I'm hearing next year.
Devil May Cry 5:
This will finally be announced at PSX. Dante, Vergil, and Nero will all be playable on the game. I don't know if that will be confirmed at PSX in particular alongside the reveal, but multiple sources have informed me that all three characters are on it and you can play as them.
BANDAI NAMCO:
Dragon Ball FighterZ:
3 of the DLC characters I've heard of include Broly, Regular Goku (it was noted to me that he does use the Spriit Bomb), and Regular Vegeta. This is something I know is going to be highly controversial and I will get into why further down. Three more characters that I know about but not their status of launch or DLC are Bardock (whom I originally heard would be DLC, but that was only from one source that I have never heard back from), Raditz (I was told that he'd be DLC by only one source in particular), and Goku Black (in his Rose form)
I was told that Goku Black was even finished 3 months ago, and that Broly, Regular Goku, and Regular Vegeta were finished during the game's main development with Goku Black. I think people should make some noise if those 3 (or 4 if Goku Black is withheld) were made alongside the launch game, but are going to be held back as DLC like I've been told.
With the controversy out of the way, there is a Switch port in the works. Unreal Engine 4's UE4.15 is Switch-friendly, so that may explain why the Switch port is coming later. I do not know what Unreal Engine 4 version it uses for the others. The much demanded Nintendo Switch version will likely come out next year in the autumn or winter.
For some personal history, the season pass was originally leaked to me as some exclusive pass featuring saiyans (I originally heard about Broly and Bardock being DLC characters). Since the FighterZ Pass was revealed, I've heard much more since originally leaking those two. I've been told the game will be supported for 2 years by multiple sources. I don't know if that pass of 8 characters accounts for the first year or both. I am going to assume it means just the first year. Bandai Namco is reportedly, according to the people I have talked to, taking a very serious approach with this game having a lengthy life and long term support. Including an esports push.
I have a few different sources regarding this game as I said. Every source that I've talked to has told me that Broly, Regular Goku, and Regular Vegeta have all been heard about and agreed upon as being DLC.
Soul Calibur VI:
I was told it'll be for PS4, PC, and Nintendo Switch. There was no Xbox One version mentioned to me. The game should be revealed by the end of the year and make its 21st anniversary at least. One trustworthy source told me it would be revealed at PSX. If the Switch version is not announced in a matter of fact way alongside it like multiplatform games do when revealed at a specific console's event, then it should be announced during the Nintendo Direct in January that I keep hearing about. The source who told me about the Switch version is different from the one who told me of the game's existence, I might add. They also told me that Link would return as a guest character on that version.
NINTENDO:
There has been pressure towards Game Freak to get Pokemon's 8th Generation out in hopes of a release next year. If you recall Pokemon Stars, that is (or was) real, but all it was was a Sun and Moon port to the Switch, used as an engine test tech demo thing.
Metroid Prime 4 should have something revealed with some in-game footage early next year from what I've heard. I'm hearing that Direct in January particularly. Bandai Namco is developing the game for Nintendo. I don't know which development studio.
There is some kind of new Animal Crossing that they hope to release next year too.
The Switch's Virtual Console will not be like how it currently is known to be like. There is some kind of a subscription service of sorts in the works.
Mother 3 is real. According to my source, it was completely localized and playable. The sad thing that I've heard is that it is being held back for some reason, which all I know has something to do with not knowing which month to release it in.
According to one of my sources, they claim that Square Enix is doing The World Ends With You 2 exclusively for the Nintendo Switch.
Blizzard is preparing a Hearthstone port for the Switch. I'm not sure when this will be announced due to the phrasing, but I heard about this when I went to Blizzcon.
