No there isn't, ignore the recent info.
Paul Gale and Superbot have both stated over 20 characters.
Re-read what the horrible blogger typed up, he said it was the "launch line-up"
They revealed what was leaked and this seems like an MVC3 case.
There are more than 20 characters and we still got more work to do rofl!
I've been following this game every single day and know all the info, I've even had conversations with Paul Gale and he's joined my forum as well.
The next 2-6 characters are most likely unlockable and will not be revealed. I can say this though marketing on the game has been horrible and well this won't help it but yeah, just trust me on this one! =)
Paul Gale also debunked this already and he also countered the NeoGAF idiots posters saying he got people fired.
https://twitter.com/PaulGaleNetwork/status/251862066036604928https://twitter.com/PaulGaleNetwork/status/251864137704022016