Nothing surprising here, shes been at the top of the list for a long time.. with the scuttlebutt being the reason Kavanaugh was nominated over her was to keep her in reserve for when Trump replaces a female Judge.
Now I have no inside knowledge to back that up, but that has been rumored publicly for a while.
Agreed, and excellent analysis, when Trump confirmed that a FEMALE was going to be nominated he stopped short of announcing her by name but unless he has another female at the TOP of his short list it looks like Amy will get the nod and likely will get confirmed.