The interview that I mentioned early with Nomura seems to be coming up in small pieces regarding the series of KINGDOM HEARTS and Final Fantasy. Below are some translations that I got from the article.

Nomura: KINGDOM HEARTS Coded is almost at an end for development. KINGDOM HEARTS Coded & Birth by Sleep are deep connections that are connected after KINGDOM HEARTS II.

Mike's Note: As far as developement with any new titles from KINGDOM HEARTS, Nomura stated that he needs some time to think clearly, because there has been so much of the story that was already told. Right now it's hard to judge what will happen, but as always I'm sure Nomura has something up his sleeves.

- As for the three characters, what would you recommend for the order to play?
Nomura: For story wise, Terra. Following Ven and than Aqua. Ventus has the easiest play style.

- Mickey's star fragment
Nomura: Mickey's star fragment is used to transfer from world to world. It's later known as gummi blocks.

- How many years did the title take place before the original KINGDOM HEARTS?
Nomura: About nine-ten years.

- Zack Fair from Final Fantasy: VII appears to be a guest in the new title.
Nomura: The story took place in the past, so we wanted charcters from the past as well. Zack Fair is just a bit older than Ventus and is aiming to be a hero in the Olympus Coliseum.

- The Secret Movie...
Nomura: Not only does it connect to the new sequel, but recaps on a lot. It could change your view on things.

- Do you have a message for everyone looking forward to Birth by Sleep?
Nomura: Because this extremely exhilarating game is complete, I think I can use it as an excuse feel a little stress relief. Since both RPG enthusiasts and those who aren’t very good at action games can customize the Deck Commands so everyone can enjoy playing it,. Those who have been following along with the series, please make sure to reserve this title.

Source: FF-Reunion