So, I just finished a new playthrough of the game and I can say that what the majority of people already knew is true the cliffhanger of who's pregnant can't be Tanya because I tried a playthrough without her just to be sure and see if the end of the last update was different and it's exactly the same thing. My guess is still on Aunt Liz.
Now, after replaying the game I really, really want more Aunt Amy and I won't mind if the future update has at least some interactions with her in all of them because she's so freaking sweet and was away for so long, I think she deserve to be more present than anyone for a while.