Question about pre-published books

[J.P.]

I have been combing this group and can't seem to find an answer to this question. I'm not sure if I am posting this in the right section, and if I'm not, I apologize. I was wondering: can authors can add books that aren't published yet but are going to be? For example, adding a book without a cover image or description (because I haven't released it yet) and just gradually edit the book to include that information when it is time to do so. That way it will help generate pre-buzz for the novel and readers can add it to their TRL. Or is this against guidelines and frowned upon? Thank you in advance for your help!

[Lau]

Authors can post forthcoming books with only partial information but not Incomplete and in progress works per Librarian Manual

[J.P.]

Lau wrote: "Authors can post forthcoming books with only partial information but not Incomplete and in progress works per Librarian Manual"

Thank you so much!