"For more than two years, you never thought we would shift gears, but we have."
I think the "new" sketch they released is of a son, hence the similarities in the eyes and mouth, even the one eyebrow hasn't changed, and the nose is similar enough, just thinner. But also explains the obvious lack of facial hair, and younger appearance, and that the hair is curly in the new sketch, and straight in the original. They said the first one becomes secondary to this "new" one, and that was a key statement, not that it is replaced or updated or improved, and that IMO is the switching gears they were talking about. They are telling the perp that he may have thought they didn't know about the younger person's presence because they were so focused on the older person in the actual video they have, but they always had this witness and sketch who gave away the presence of another perp and now they are focusing on finding him first instead, knowing it just takes finding one to lead to the other.