A new magazine scan reveals some new DLC costumes to be released on September 1:
The usual set of costumes of previous Tales characters has been announced to be 300 yen each. The list is--
Velvet: Rutee (Tales of Destiny)
Laphicet: Richard (Tales of Graces)
Rokurou: Ludger (Tales of Xillia 2)
Eleanor: Natalia (Tales of the Abyss)
Magilou: Arche (Tales of Phantasia)
Eizen: Hubert (Tales of Graces)
There is also a Mieu costume/head. The head and Sorcerer's Ring seem to be attachments separate from the costume itself. The body suit is for Laphicet only.
(The Normin costume pictured above that is obtained ingame.)
Lastly there's a set of magicians' costumes for the girls in the party. These will also be 300 yen each.
A new commercial for Tales of Berseria focusing on Velvet has been put up. It doesn't appear to be part of the six part commercial series as it's labeled differently and longer than the others, but we'll see how that goes on Sunday.