Well, callooh callay! I just found out that there is a second season of Kuroshitsuji called, appropriately enough, Kuroshitsuji II. This “sequel” features a different butler and 12-year old master, but evidently Sebastian and several other supporting characters from the first go round are present. There are only 3 episodes available with English subs at this time, I think. Funimation is streaming the series.
But check out these great images from the official Kuroshitsuji site. While feathers are one of the dominating visual tropes of Black Butler I, spider webs seem to be the grounding image for Black Butler II. Lovely.