Though, of course, all of this new information is unconfirmed, it's worth noting that She-Hulk and Zero, both appearing in the list from our source, were announced after we received it. In addition, some of the characters, like Frank West and Soki, are believable because they were featured in Tatsunoko vs. Capcom (like Zero) and thus are probably relatively easy to update for MvC3. The Mega Man character is likely also similar to the Mega Man Legends-style version found in Tatsunoko. It's possible some of the new characters are even based on Tatsunoko movesets -- Delacroix makes more sense if he's taking the place of the sword-wielding Karas or Tekkaman Blade, for example.
[Image: Frank West in Tatsunoko vs. Capcom]