Marketing. GoPro is at the point now where people use the word to refer to a certain type/style of video. This will help push it further in that direction making GoPro synonymous with point of view/onboard camera. Think of the recent NFL issue with commentators referring to MS Surface as 'an iPad like device'. Or the classic example of tissues being referred to as Kleenex. This will push GoPro further in that direction. There are also probably a lot of hockey playing kids who will want one of the cameras so it could also boost sales more directly.
But there's another facet to this kind of marketing. Try contrasting videos like this that GoPro puts out for promotional purposes with the kinds of videos that the average person creates with a GoPro. These are fun to watch and full of unique views of cool stuff. The ones that average people create are, for the most part, boring. Yet their market is 99% people who make the boring kind of videos. If their marketing showed the kinds of videos that most people would be creating, no one would buy them. By showing videos like this, they get people inspired enough to think that they can shoot something cool.
This is from a crash in the Tour down Under earlier today:
https://www.youtube.com/watch?v=Py_7pYVF664&feature=youtu.be
Actually there's probably a way to do that via a phone or something. I need to play around with my GoPro a bit more
I also wouldn't be surprised if this partnership pushes GoPro's mechanical and/or software image stabilization technology forward magnitudes. It's a cool project with a big name customer the engineers will be spurred to find creative solutions to enhance the viewing experience.