I don't know if this has been remarked upon, but I kind of appreciate the diversity in the presentation. It's not showy or contrived; Apple doesn't make a huge deal out of it, but it's nice to see a wide variety of genders and races.
The pictures themselves are telling to. They are all weird, lower power poses. Could you imagine Tim Cook or another speaker striking a pose like that? This is how the executives like to be seen: https://www.apple.com/leadership/
Sadly it has come to the point where any criticism of diversity for any reason is sacrilegious, but people would be wise to think twice what the outcome of these policies is. The road to hell is paved with good intentions.