Shizuki Yamashita of Synch-Point recently updated their blog detailing one of the new features available in the FLCL Ultimate Edition release of the series: a English Voice Actor/Production Staff commentary track.

1. Episode 1: Kari Wahlgren (Haruko) & Jennifer Sekiguchi (Mamimi)
2. Episode 2: Jennifer Sekiguchi (Mamimi), Marc Handler (ADR Director), & Shizuki Yamashita (Translator)
3. Episode 6: Kari Wahlgren (Haruko), Jennifer Sekiguchi (Mamimi), & Marc Handler (ADR Director)

The other announced bonus item so far is a set of postcards featuring the robot of each episode. The menus look nice, too.