A sequel to the cartoon series Avatar: The Last Airbender has been announced called The Legend of Korra (link). In it, Korra is tutored at some point by Aang's son Tenzin, which sets off immediate red flags for people who shipped Zuko x Katara in the original series as Katara x Aang was considered canon at the end, and Tenzin's mother has yet to be named. I'm sure this wank'll be everywhere but there's already some starting here.