I was looking at the pictures that have been made available so far. Here's what we have:
This one is just called "intro" and I'm guessing this is the artwork of either the game menu background (where the Play, Options, etc. buttons would be) or is part of the intro storyline. LDW is currently using this as the background for their official Virtual Families site.
This, of course, is the banner. We can see a stereotypical nuclear family. This makes me slightly sad, because most likely that is all that we will be able to create, just like in the VV games.
This picture's filename is "college," and it's obviously parents waving goodbye to someone... given the filename the obvious guess is that they're seeing a kid off to college.
This picture's filename is "marriage" and it needs no further explanation.