I think the apology was swift and adequate.
Also the description of breasts in the book is actually correct with regard to physiology and anthropology. I think the revision for future prints will be a good thing overall for political reasons but it will technically be inaccurate.
If my dd (or future dc) ask me why women have breasts (as opposed to just nipples like men) I will tell them the truth about sexual selection or to put it simply women have breasts because men like them.