While Square Enix occasionally releases games in Europe first the lag time between the two regions is only a few days. Expect to see a domestic release of Kingdom Hearts: 358/2 Days in September, October, or November.
Take a look at the status screenshot with the L shaped block. That’s a picture of the panel system. You can add item, skills, spells, and parameter panels to customize your character before a mission starts. Want Roxas to cast fire? Equip a fire spell panel. Need an attack boost? Add attack up. Interestingly, your level is also connected to the panel system. Level up panels need to be equipped to boost your level.
Kingdom Hearts: 358/2 Days comes out in Japan this Saturday. Look for import coverage in the near future.
Update: Square Enix will release Kingdom Hearts: 358/2 Days in North America this fall too.