My first review for Mercury did not. I submitted it on the day of publication, and after 8 days it still has not published but all of my review for books I’d bought at Amazon have been. So then I thought I’d try a 2nd review, acknowledging the complimentary copy like several of the reviews that were already up on the day of publication. It is not public yet either.
It clearly has not changed. Look at the review for Mercury by Amy Jo Burns, a BookishFirst book . Maybe they were understaffed or overwhelmed during leftover holiday shopping?