Written by Alan Dean Foster, same author of the film's novelization, the prequel is titled "Alien Covenant - Origins". This is the publisher's summary:
"The Covenant mission is the most ambitious endeavor in the history of Weyland-Yutani. A ship bound for Origae-6, carrying two thousand colonists beyond the limits of known space, this is make-or-break investment for the corporation — and for the future of all mankind.
Yet there are those who would die to stop the mission. As the colony ship hovers in Earth orbit, several violent events reveal a deadly conspiracy to sabotage the launch. While Captain Jacob Branson and his wife Daniels complete their preparations, security chief Daniel Lopé recruits the final key member of his team. Together they seek to stop the perpetrators before the ship and its passengers can be destroyed.
An original novel by the acclaimed ALAN DEAN FOSTER, author of the groundbreaking Alien novelization, Origins is the official chronicle of the events that led up to Alien: Covenant. It also reveals the world the colonists left behind.
http://avp.wikia.com/wiki/Alien:_Covenant_-_Origins
The Alien: Romulus sequel is currently in development and cameras are set to roll by October, 2025! Be sure to bookmark the Alien: Romulus 2 Info Page for an up-to-date account of all available information, production updates and important details!
In addition to the upcoming Alien: Romulus sequel, we have the Alien: Earth TV series from Noah Hawley now streaming and a rumoured Alien vs. Predator reboot in the works as well!

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