If you look closely at the wing from the magazine render it seems its attached at a lower point where as the official tweet pic from Toyota the attachment points can be seen on the top of the trunk. I think its just a good render not really a "leak"
Hey, new member on the forum here, I've been a long time lurker of these forums and the general collaboration of Toyota and BMW on the J29 ever since the initial announcement. Finally decided to make an account as we're getting closer to the official reveal at Geneva of the racing concept...