Let's pause briefly to remember the original CLANBOOK TZIMISCE. It had John Cobb's explicit, woodcut-like art, overly vivid fiction, pages designed to look like human skin. It was often sold shrink-wrapped and one place wouldn't let you see the back cover unless you were over 18. The book supposedly made someone's little sister vomit. It was quite an experience.
With the new CLANBOOK TZIMISCE, wiser heads have, fortunately or unfortunately, prevailed. There are few grotesque descriptions and only one truly extreme drawing. (The art is mostly just Vampire: Dark Ages creepy otherwise.) No "over 18" shrink wrap here but I still would caution those younger and more sensitive people, as with anything Tzimisce. There's lots of information, especially about Tzimisce Methuselahs like Yorak and the Dracon. It suggest that the Tzimisce Antediluvian somehow now exists in all Tzimisce and can't be destroyed because he always re-emerges from the collective ooze that is this clan. There's lots about ghouls and revenants (new family, creature templates, derangements), the Children of the Dracon, non-European Tzimisce, Koldunic sorcery (new path), the Path of Metamorphosis with related mysticism and some funny stuff written in the voice of a modern Tzimisce advising an elder emerging from torpor.
Still, like many new Clanbooks, this one assumes prior knowledge- here of characters like Yorak (and the Cathedral of Flesh from the TRANSYLVANIA CHRONICLES) and Dr. Totentanz (from the original CLANBOOK TZIMISCE.) Also, they've made Lambach Ruthven older and of lower generation than in other important sources.
There are many standard features including a sample pack and discipline variations. Character templates include embraced revenants and followers of various Paths of Enlightenment. (Some path follower templates have typos- name of path not specified, wrong virtues.) There's a glossary to help with exotic terminology and a list of Eastern European names.