Zenith is a publishing company that has historically published English-translated editions of Japanese manga, including works of a more explicit nature. They have released several of Tagame’s classic works in English over the years, such as A Boy and His Soul and M . Zenith’s focus is on bringing niche or mature-audience titles to Western markets, often with updated translations and new cover designs.

I should also consider if there's a mix-up with the names. Gengorō Tagame is the Japanese name, and sometimes titles are translated differently. Maybe the user is referring to a specific series or a new volume in an existing series.

Gengoroh Tagame (タカメ ゲンゴロウ) is a renowned Japanese manga artist and writer, best known for his exploration of LGBTQ+ themes, gender identity, and human relationships. His works often blend explicit content with complex narratives and character dynamics. Notable titles include My Brother is a Female Student , A Boy and His Soul , and M (1971), which is a pioneering transgender narrative manga.

Another angle: the term "zenith" might be part of the title itself. For example, a series titled "Zenith" with contributions by Tagame. But I don't recall such a title.

Putting them together, it seems the user is asking about a new English-language manga by Tagame published by Zenith. However, I'm not immediately aware of a new release by Tagame with Zenith. My knowledge is current up to October 2023, so perhaps there's a recent release I haven't caught yet.