These spores will infect several members of the Covenant crew and initiate the growth of the Neomorphs within their bodies.
Upon reaching adulthood, they grow larger, walk on their back legs and have grown tails.
These Neomorphs apparently look similar to the “proto-Alien” concept art from Prometheus, specifically their white color, pointed head and two dorsal spines.
The report caps off by saying that aside from the Engineer, none of the creatures seen in Prometheus will appear in Alien: Covenant, although the Neomorph does reportedly resemble the Deacon.