I tuned out most of the previous run as I couldn't stand it, but did tony ever do a simple DNA test?
I'm almost certain that Tony never did a DNA test in the main Iron Man book. I'm less certain about other books, like say "International Iron Man", but I don't think a DNA test was ever done in that one either.
I just had a horrible thought: Maybe Slott intends to keep Amanda as Tony's mom. I'm reading all these things into his writing, hoping to find a clue, and he may not even intend to reinstate the Starks as Tony's parents.
Oh well, time will tell.