I doubt it. Doublefine is busy with Brutal Legend... Besides, in the corner of the first picture is the signature Rub. K. And Scott Cambell handeled all the concept art for the first game. So unless there's a new artist at DF, There's are probably just fandrawings.
~sigh~ I've begin to lose hope on Psychonauts 2... I used to believe so much....
"A few times in my life I've had moments of absolute clarity. When for a few brief seconds, the silence drowns out the noise and I can feel rather than think, and things seem so sharp and the world seems so fresh. I can never make these moments last. I cling to them, but like everything, they fade. I've lived my life on these moments. They pull me back to the present and I realize that everything is exactly the way it was meant to be."