Boy, things have changed quite a bit.

Starting off, inner release and berserk merged into a single buff, and it is now a 10 sec buff where all your hits direct crit and guage costs are free, so you aim for 5 FCs, an upheaval, and onslaught every time you IR.

Second, Shake it Off no longer removes debuffs, but instead applies a Divine veil clone shield on the whole party. This shield can be strengthened by using up certain defense buffs.

Otherwise it's pretty much the same.