What are the changes in the battle system from FF13 to FF13-2(if any)?

So far in FF13-2, the battle system seems the same as the one used in FF13. Are there any differences between the two systems?

There are several differences, some major, some minor:

• No Eidolons

• Several paradigm role abilities have been removed or consolidated

• Paradigm shifts are much faster and do not have heavy animations involved in them

• Party AI within each paradigm can be tuned to focus on one enemy or area-of-effect attacks

• Deterministic pre-emptive strikes via the Mog Clock: you decide how to engage most non-boss battles

• Incorporation of cinematic action sequences (read: quick-time events)

• No permanent third party member: replaced with a "paradigm pack" of monsters, which allows one of three monsters to be switched out mid-battle depending on your paradigm deck

• Monsters have "feral link" abilities (read: limit breaks)