The Petiton hit 25k today and its still growing!
After they hit 25k an fan tweeted Namco Bandai about the progress
Some months before, Namco said that they could consider releasing the game if the petition hits 25-30k so they might be brewing the games release right now.
If you wanna support the game's release in America and Europe sign the signature and post it on America/Europe Bandai Forum in the official support thread.