An image of what appears to be the purported RTX 3080's heatsink has leaked online indicating that NVIDIA will be introducing a new dual-fan mechanism with a huge cooling block and at least four heat pipes with the upcoming Ampere GPUs. The top-end GA102 GPU will use the PG133 board for the Founders Edition of the RTX 3090, RTX 3080 Ti, and RTX 3080, which will use the new cooling system while AiBs are supplied with the PG132 board that allows for custom cooling designs.
https://www.notebookcheck.net/NVIDIA-GeForce-RTX-3090-could-be-the-new-Titan-with-384-bit-24-GB-GDDR6X-VRAM-and-350-W-TGP-GA102-Founders-Editions-cards-with-an-expensive-cooling-system-to-be-based-on-the-PG133-board.469523.0.html