A recent development in the story of women in combat roles in the U.S. military:

Pentagon orders review on ‘effectiveness’ of women in combat arms jobs

I think it's pretty clear that the leadership in the DoD feels that women should not be in combat roles.  I have some old threads on this, and I don't think they should be either, but the interesting thing here is how the DoD has crept up on this.

They must be uncomfortable with just issuing a decision, as over the past year they've taken incremental steps, which the administration really hasn't done on anything else.  It would sort of suggest that they think this is the bridge too far.

It might also suggest a bit of a realization that things can be reversed and therefore the goal is to build a basis to avoid a reversal.