Two distinct writings are promised among those mentioned in 2 Nephi 27, a prophecy from the writings of Isaiah.
First to be published was Words of the Faithful (2017).
Second was Words of Them which have Slumbered (2018).
These texts are derived from ancient words, being expanded by their interpretation, and given by the loremaster Pengolodh I-Earnu.
Now available on Amazon in Kindle and Paperback (Links on book covers)
The Official website has information and resources.