So apparently these are from an exhibit in an all-FF7 museum Square Enix set up for FF7's 10th anniversary. Original Yuffie in Advent Children rendering is very nice. They should do another movie (with better plot), or release an artbook or something.
This render is really cool, but I'll just never be as mysteriously captivated by any version of her other than her Kingdom Hearts in game model. Idk why but whenever I see it... *splurge*