On The 3rd Birthday site Square Enix revealed a new feature, battle damage. When Aya takes damage her clothes take damage too.
The site also explains the weapons system, which we touched on earlier. Aya can select four different weapons by bringing up a menu with the D-pad. The kind of guns and grenades she gets depends on the character she dives into.
While it wasn’t on Square Enix’s Gamescom lineup, The 3rd Birthday should be at the show. Yoshinori Kitase tweeted the Gamescom version was on his desk when he came into work.