Oh hell yes, I haven't seen the trailer yet but I'm glad to see progress in the Gears franchise being headed off by Fergusson.
I have a suspicion that despite canonically speaking (Adam Fenix in the books states "I'm not sure why Marcus would choose to be with a sterile woman.") Imulsion made people sterile. Well at the end of Gears 3 Adam's device neutralized the Imulsion parasite, thus no more infertile woman or men. Anya is JDs momma.
Just a theory.
Let me start by saying "Where is private?"
This is exactly what I thought as well. It could be the immulsion just blocked eggs or something. I hope this is the case since it wouldn't make sense for it not to be Anya