Well, we know what the first of these is, and have another one to boot:
https://www.syfy.com/syfywire/exclu...k-books-will-explore-legacy-female-characters
SHO is
Shadows Have Offended, by Cassandra Rose Clarke, a TNG novel as stated, and focused on Troi and Dr. Crusher; it is standalone and set in TNG Season 7.
The second book announced in the article is a DS9 novel, by Alex R. White. Their novel,
Revenant, will focus on Jadzia Dax and Kira.
These are the novels that were teased in a couple of the SDCC panels, as reported by 8of5
here.