We should not have been told anything until Tillerson had stepped down. All this here is speculation and possibly a few trial balloons. We don’t always need to see the sausages as they’re being made. That can be disgusting and confusing to many.
Tillerson should have been fired the first time he publicly opposed the President's position. He has done that several times.
More trial baloons by different members of the administration with their own respective agendas than speculation, I suspect. But that doesn’t make it real.