This is what the next-gen 12-pin PCIe 5.0 power connector looks like
Fasgear PCI-e Gen 5.0 Power Cable - 70cm 16-pin (12+4 pin) 12VHPWR Male to Male Sleeved Cable with Combs - RTX 3090 Ti GPU 600W Power Cable for RTX 4080 4090 Graphics
Full-spec PCIe Gen5 "12+4pin" MSI power supplies for next-gen GPUs have been pictured - VideoCardz.com
What's the difference between a 6-pin, 8-pin, and 12-pin GPU Cable? - Pactech
Amazon.com: CORSAIR 12-Pin Sleeved GPU Power Supply Cable for 3060, 3070, 3080, 3090 Graphics Cards : Electronics
Nvidia Founders 12-Pin PCI-E Connector, 4,99 €
Nvidia 12pin, PCIe 5.0 GPU power connector and interoperability - HWCooling.net
ATX 3.0 PCIe 5.0 600W 3 x 8 Pin to 12VHPWR 12 Pin Power Adapter Cable - MODDIY
CORSAIR 12-Pin GPU Power Cable, Sleeved Black CP-8920274 - Best Buy