Expect Mass Effect 3's endings and you will not be disappointed 😅 (jokes)
For now all we have is the WIP images in the guide
From the looks of things these appear to be based off dialog decisions and routes taken throughout the game and are full screen images with a text overlay. Maybe Dr.Muramasa is allowed to share more details or some more WIP images down the line closer to 1.9, though this is doubtful as it kinda runs the risk of spoiling the surprises for peoples favourite characters.
From day one it has been confirmed pregnancy will not be a system (like Summertime Saga for example) and most likely be worked into the endings (there is already impregnation CGs in Anna's bedroom for example so this will be an easy one to worked in)