Faux Pas?

Am following some fabulous author’s out there and to date, I have only seen one who talks about a book they are in the process of writing. Maybe I’m doing a faux pas by putting this question out there. Why? What are the pros and cons about sharing some information on the books your are in the process of writing?
Maybe because I love truth and raw information it seems nice to share a bit about a book in process. Not the entire story line. I’m probably a teaser at heart anyway.
Debbie