Soul Calibur IV Updated (Japan, PS3 only)

Brief list of changes (updated periodically):

Character-specific Changes
- Algol's projectile combos no longer possible (as in, it won't pick up opponents)
- Algol's 8A+B pushes airborne opponents backwards
- Algol's 66A+B throw pushes opponent back further

- Amy's 3BA does less damage

- Astaroth's knee is more unsafe on block

- Cassandra's 66B+K does not relaunch

- Cervantes's 11K has less advantage on block

- Ivy's infinite gone
- Ivy's unblockable (6A+B) from whip stance does less damage
- Ivy's Criminal Symphony throw has a wider window for the JF version
- Ivy's whip 3B has worse recovery

- Kilik's B+K now GIs vertical attacks, and has a shorter window to GI attacks

- Raphael's B does not track as much

- Setsuka's A throw does less damage (25 -> 20)
- Setsuka's JF moves are easier to pull off (?)

- Siegfried's 3[B] has slower recovery (3[B]B no longer is a combo, etc), shaves off more soul gauge damage

- Sophitia's BB does less damage (36 -> 28)
- Sophitia's 3A+B only hits airbone opponents once

- The Apprentice's A+B throw break has quicker recovery

- Tira's infinite against Talim no longer possible
- Tira's 2A no longer whiffs

- Talim can't dance around in the air

- Voldo's BT 236A does not stun anymore

- Xianghua's command throw works on Astaroth

- Yoshimitsu's aB+K has less recovery time (aB+K(CH) 3AB is no longer a combo, can't do aB+K during combos), does less damage (30 -> 20)

System Changes
- Soul Crushes are harder to pull off (moves generally take off less from the soul gauge)
- You can JI throws

Source: 2ch, ソウルキャリバー4総合掲示板