Still no release date for FF:CC yet but here are a few more bits of details about the RPG and pictures of the twins a little more grown up.

First, it doesn't look like you'll be able to choose to be a boy or girl even though the story centres around two twins. Single player mode will have you controlling Yury as you progress through the story while wireless mode will allow up to 4 player co-op play.

Source:
• V-Jump Scans from Neogaf Forums

Related Links:
• Official Site
• Final Fantasy Crystal Chronicles: Ring of Fates, The Story