At least according to Corsair, there are no changes to the cable, only the PSU/GPU-side connectors:
> Cable: 12V-2x6 = 12VHPWR No difference!
> So what does this mean if you’ve already got hardware for 12VHPWR? Fortunately, existing 12VHPWR cables and adapters will work with the new 12V-2x6 connector as the new changes are only related to the GPU and some PSUs (Our new RMx PSUs for example). The cables you've got already will work fine, so don't worry.
> Cable: 12V-2x6 = 12VHPWR No difference!
> So what does this mean if you’ve already got hardware for 12VHPWR? Fortunately, existing 12VHPWR cables and adapters will work with the new 12V-2x6 connector as the new changes are only related to the GPU and some PSUs (Our new RMx PSUs for example). The cables you've got already will work fine, so don't worry.
https://www.corsair.com/uk/en/explorer/diy-builder/power-sup...