Managerial Changes

Producer/Director
Naoki Yoshida

Section Leader Changes

Assistant Director
Shintaro Tamai (FINAL FANTASY X, Front Mission 5: Scars of the War)

Lead Game Designer
Nobuaki Komoto (FINAL FANTASY IX, FINAL FANTASY XI)

Lead Combat System Designer
Akihiko Matsui (FINAL FANTASY XI)

Technical Advisor
Yoshihisa Hashimoto (Next Generation Game Engine Development)

Lead Programmer
Hideyuki Kasuga (FINAL FANTASY XI, DIRGE OF CERBERUS -FINAL FANTASY VII-)

Senior Concept Artist
Akihiko Yoshida (FINAL FANTASY XII, Vagrant Story)

Lead Artist
Hiroshi Takai (FINAL FANTASY XI, THE LAST REMNANT)

Lead UI Designer/Lead Web Designer
Hiroshi Minagawa (FINAL FANTASY XII, Vagrant Story)

These members will make up the development team's new core-a core...
Based on the words core-a-core, and common sense, it is fair to suggest that more changes were made lower in the tree.
I can't find that list... this one is on any forums topics discussing the changes when they happened.