So excited for this. I'm over here with this Google Photos and cannot even manually tag a face or un-tag a face that's not right. Yet another example of Apple's cleverness, yes they come out with some things after the others however basing my judgement off this post and past experience they get it right.
BTW - Come one Google get your stuff together add manual tagging!
BTW - Come one Google get your stuff together add manual tagging!