Posted this earlier on the ESRB leak thread and on the RTC thread, but it pertains here as well, so I'll mention it again..
If the Esrb are in the US, And the game's rating was revealed on the 16th of June, That means that the leaked images/videos were taken in the previous weeks.
This would be in english 3 months before the US release date on October 3rd.
I'm almost positive this isn't the whole roster; An English copy wouldn't be nearly complete nearly 3 months before release with complete translated content. Not to mention that the second to last row has one missing slot, which would be AWFUL Graphic design. I don't know how long it takes to program in characters, but I'm pretty sure 3 months would be enough time to add or finish polishing veterans or unfinished newcomers.
Don't give up hope because your character, veteran or newcomer, wasn't in the leak.