Now that were up to Roger's section in Book 3, it's safe to post what SG #66 from had to say about Book 3 without ruining too much:
We'll never know, but I do wonder what Innovation's Ellen Jones meant by "From this point, Book 3 explores Sarah's world." I can't imagine she meant that we would only see Sarah in Issues 2 through 4 of Book 3. If so, that would have been a slap in the face to people hoping that characters like Maggie, Carolyn and Roger would get the more coverage that David Campiti promised in SG #62 - what they receive in Issue 1 could hardly be considered "a lot." So, perhaps we were to see those characters from Sarah's POV - or perhaps Jones didn't mean that we would only see Sarah's world and the other characters would pop up between the parts that would focus on Sarah. I certainly hope that would have been the case. But whatever it was to be, the focus is sadly moot at this point...