According to the news item from adriansang.com, Namco Bandai announced at the San Diego Comic Convention that there will be around 100+ swimsuit costume DLCs for in the upcoming game Tekken Tag Tournament 2 (out in a few months).
In his twitter account, Tekken series producer Katsuhiro Harada explained that every character in the game (Male, Female, and even Kuma…) will have swimsuit costumes. There’s still not much details to go around this announcement.
At an earlier article from siliconera, Harada mentioned that the higher-ups at his company about paid DLCs. Maybe outside the possibilities of paid DLCs in form of old Tekken OSTs or Endings, they might include some or most of the bikini/swimsuit DLCs that need to be paid. If not, well more power to Tekken.