Where to find what Doujinshi is being licensed in English?

I recently found out about the individual doujinshi being sold in the US through sites like JList and wanted to know if those works are a one-and-done type of deal where they only license and publish a chapter or two, or they publish the full series?

So I want to ask if there's a site, Twitter, or something that announces licenses for doujin publishing in English?