Right? What could "change everything", and "change everything" for whom? Her? Micah? Gunnar?
Is is that the paternity test was wrong and Gunnar really is the father? Highly doubtful to impossible...and who among us wants that, anyway?
That Jason is not really dead? Nope. We saw his dead body...
That she has another child that is Gunnar's? Seems unlikely.
No matter what her news is, I'm pretty sure I just don't care.