Sega revamped the battle system for Yakuza 5. The PlayStation 3 game will have seamless transitions into battles and people in the city have more vibrant reactions to fights.
Heat actions and "revelations" that unlock new attacks are back for Yakuza 5. Climax Heat moves are new powerful attacks that you can activate under certain conditions. These are supposed to be trump cards that you can use to reverse a battle.
Yakuza 5 is slated for release this December in Japan.