New scans for Tales of Zestiria reveal a couple of costume DLC set for release (no price or date yet).
There's a school uniform set. Like in Tales of Xillia and Tales of Xillia 2, some parts of the costumes are attachments and separate hairstyles.
Also to be released is an iDOLM@STER costume set for the girls. Included with the costumes will be doll attachments of iM@S characters (as seen in the screen in which Edna has Ami/Mami dolls attached).
Alisha-Chihaya Kisaragi (Includes Chihaya, Takane, and Azusa dolls)
Lailah-Miki Hoshii (Includes Miki, Hibiki, and Iori dolls)
Edna-Yayoi Takatsuki (Includes Yayoi, Ami, Mami, and Ritsuko dolls)
Rose-Haruka Amami (Includes Haruka, Yukiho, and Makoto dolls)
Of note here is that these are the third and fourth costumes shown for Rose and now Zaveid has one too. Bandai Namco still refuses to answer whether or not they're playable though.
The 3DS version of Tales of the Abyss is set to be added to the Japanese Nintendo eshop on December 3. An Abyss theme will also be available the same day.
No news if it'll be put on other regions' eshops.
An article on Tales of Zestiria reveals a few more characters.
The first is Jiiji (CV: Ichirou Nagai), the elder in Izuchi, village of Seraphim (known as Elysia in the English version--the village, I mean). The other is Maven (CV: Tomomichi Nishimura), a veteran explorer. As usual, the spellings are guesses, so they're probably wrong.