a) 15th April 2016.
The Alien Covenant issue of Empire magazine is released.
I took a look at the scans linked to AVPGalaxy.net and then Later someone else had made more detailed scans http://www.alien-covenant.com
b) Something in the air
A scene showing David the android bombing the Engineers cityscape with the ampules. However
above the Engineer's city, a vast bow shaped ship with and bulky end, making it resemble a cross between a rib and a scorpion tale. So what is it? Is it just a piece of floating architecture?
c) A name: Mother-Juggernaut
Alien Covenant concept artist Wayne Haag's response was "Well well well... he added the Mother-Juggernaut..!" (See: https://twitter.com/ankaris/status/853188421413511168)