"The spiral retaining ring is used instead of a more common standard clip with an opening that's squeezed together. These are said to provide improved retention thanks to the 360 degrees of contact."
Fox had these 10+ years ago. On the same note, Fox's air bleed system and floating axles are straight out of Marzocchi forks from the turn of the millennium. Funny how old ideas keep getting re-hashed as new. Oh and yay more proprietary tools for no reason at all :D