As far as I know, these photos are the only ones that have been released to the media; the top left one being the most widely used. I have always thought his facial expression in that photo was “off” somehow. He looks stiff and wide eyed, not smiling, pained almost. The other photos show a baby looking normal and relaxed.
I brushed it off as just a snapshot of a funny facial expression, but having read today’s evidence which described his demeanour as “frozen watchful” (because he’s already learned that he is unsafe and his carers hurt him) I’m starting to think that photo speaks volumes.