Photos of the upcoming RTX 4090 Founders Edition have emerged, highlighting similarities with the RTX 3090 Ti. Seemingly, NVIDIA will retain the dual-axial fan design from RTX 30 series Founders Edition cards, albeit with a larger baseplate and more fins than the equivalent RTX 3090 Ti.
https://www.notebookcheck.net/NVIDIA-GeForce-RTX-4090-Founders-Edition-design-surfaces-two-months-before-anticipated-launch.620839.0.html