Halo: Divine Wind
From Halopedia, the Halo wiki
Halo: Divine Wind is a Halo novel and a sequel to 2020's Halo: Shadows of Reach and 2017's Halo: Retribution, both written by Troy Denning and published by Gallery Books. It was released on October 19, 2021.
The novel additionally follows up on elements established in the short story Sacrifice.