https://www.techpowerup.com/317127/seasonic-unveils-12v-2x6-12vhpwr-successor-cable-invites-beta-testing
 
Seasonic is ready with a modular PSU cable for the new 12V-2x6 standard, which succeeds 12VHPWR. Intel felt the need to introduce the new cable standard as part of the new ATX 3.1 specification as the 12VHPWR is flimsy, and poses a burn-out hazard in case of an improper contact. For modular PSU manufacturers, implementing the new connector is as easy as selling or giving away a modular cable that plugs into the 12VHPWR connector on the PSU's backplane, and puts out a 12V-2x6 connector on the other end, and so as a leading power supply OEM, Seasonic is handing out such cables for free, but there's a catch.

Seasonic is giving away a modular PSU cable that plugs into a 12VHPWR on the PSU's backplate on one end, and puts out a new ATX 3.1 standards compliant 12V-2x6 connector on the other end, which promises greater mechanical stability over the 12VHPWR. The cable is free, however, it requires users to sign up to a "Beta Tester Program" by Seasonic. We haven't read the terms and conditions of the program, but we predict it to be a form of waiver against any damage liability—you use the cable at your own risk. The cable features 16-AWG wires, and a connector that's aligned at a 90° angle. The capable is capable of 600 W of continuous output and excursions within the ATX 3.1 and PCIe CEM 5.1 specifications.
 
If you wish to apply for beta testing don't forget the risks involved. 
 

Any body has the link to sign up for the beta testing program?