That doesn't seem to be released yet...
I have this one on the way.
http://www.polarprofilters.com/shop/frame-polarizer-glass-filter-hero3-gopro/
I had purchased their nd filter a while back and it was sitting on a shelf. Opened it up and gave it a try today. Didn't help the GoPro's tendency to overexpose the sky in when it's a background. I emailed them asking if the polarizer might help in places where ice/snow/or water wasn't involved and they thought it would. Great Company because they are swapping my ND for the Polarizer as they have a satisfaction guarantee.
Bryharv You have a good eye and some flying talent. Nice footage. Were you in manual exposure on the beach scene when you shot directly into the sunset (3:19)?
The partial blown out sky at 2:30 and 2:35 is what my GoPro does all the time and it bugs me. Funny, I didn't notice it the first time I watched your reel. I didn't notice it till I went looking for the sunset shot.... Sometimes we get to caught up in perfection and forget about content.....
Again, good stuff!