During the Filial Bonds quest in The Elder Scrolls V: Skyrim-Dragonborn, you are asked to find Wulf Wild-Blood’s brother Torkild. Torkild will appear randomly while you are wandering around Solstheim.
While speaking to Torkild, he turns into a werebear and you will be forced to kill him. After he is killed, search his body and take the letter you find back to Wulf Wild-Blood. Wulf will thank you and give you a one point skill boost to all combat skills.
In recent Skyrim news, it was announced that the Dragonborn DLC will be available to PS3 users in January of 2013.