A couple of partial scans of Tales of Innocence R reveal a new system being introduced in the game: the Rave System.
Every time a character successfully lands a hit on an enemy, pills the Rave Gauge will gradually get filled. It has a total of four levels, order with corresponding Rave Abilities that get activated for each level. Players have the ability to customize these abilities by having the freedom to assign which ability goes to which level. Using Grade Points (GP), players can also purchase Rave Abilities from the Grade Shop.
It also seems like the game's original Style System from the DS version will be retained in ToI-R.