Anxious to get a peek at the third take on Apple's reengineered thermal architecture, we free the fans from the four T3 screws securing them to the rear case.

And they come out hassle-free. No glue on this puppy!

On the outside that is. Opening up this fan (right) takes some seriously aggressive prying against clips and adhesive compared to the screw-centric construction we saw in the 13" models (left).

This fan is also sporting completely different blades from the ones we previously encountered.

And for those of you keeping score, they're marginally larger than their counterparts from the 13" model, measuring in at 46.6 mm compared to 42.3 mm.

What appears to be Texas Instruments fan controllers are seen on the flex cable.