Namco has announced that they are currently preparing to release 3 different costume DLC packs for Soul Calibur 5, one of which will feature outfits from the Tekken series. The pack will include costumes from Jin, King, Xiaoyu as well as other well known fighters from the series. The other two packs will be the Ancient Armor set and the Modern Set.
There is no set release date or price point for the packs but you can bet that they will arrive soon. Now players will be able to have their Tekken experience and Soul Calibur experience without ever having to change the disc.