It was said not to, but alas, Final Fantasy Versus XIII has made an appearance at the Tokyo Game Show this year. Not in any flashy, publicly displayable way, though.
Apparently, after an attendee demos Final Fantasy XIII or Kingdom Hearts: Birth By Sleep, they’re taken into a special private theater and are treated with a bit of gameplay footage from Final Fantasy Versus XIII. The footage is still from the testing stages, however.
Let’s hope someone gets in there with a camera or a cell phone.