Siliconera posted a pic of a Jump article (can't link it here for obvious reasons) about bosses from Final Fantasy: The 4 Heroes of Light being featured in Bravely Default via StreetPass... And I noticed there was a new DLC weapon announced in the bottom left corner of the pic.
Buy the January 2014 issue of
V Jump to obtain a code that will get you a 「勝利の太刀」(Shōri no Tachi) katana. The Jan 2014 issue is out on the same day as Dengeki Nintendo, November 21 2013.
The
Shōri no Tachi DLC code expires on June 30 2014.
Square Enix has also announced that these 4 costumes...
...can be obtained by buying any four different products from the list shown
here. You get to pick which costume you want every time you register a product, you can only get one of each costume, and you can't register two copies of the same product. The costume codes expire on December 5 2014, a full year after the launch of the special BDFTS site.