[Minecraft] Librarians in the new update…

Simple question, I hope. Does anyone know what will happen to all the librarians I have? For example, I have them in boats with with trades I like (like mending). With the new update, do we know if their trades will disappear? Do they have a special profession block, like a book case?

Villagers retain their trades, but a librarian will need a lectern to restock. For other villager professions, the required workstations are listed here. They’ll keep the trades regardless, but they’ll need the workstation to be able to restock sold out items. Once you update to 1.14 you’ll be able to craft and place the lectern.