As far as it seems, NVIDIA has chosen to unplug Fermi, and this means that we will never see a Windows 10 (DX12) driver release for this uArch. An astonishing news if we think that NVIDIA pressured Microsoft to change the DX12 features in order to support Fermi, the most used uArch at the time (Over 20% of market share).
If Fermi hadn't been supported, the DX12 would have been a lot different. Fermi was the greatest common divisor during DX12 development, mainly because the Fermi cards were the bestselling.
From official NVIDIA doc: "Starting with the next release of NVIDIA Nsight, Fermi GPUs will no longer be supported". What is NSIGHT?: "NVIDIA® Nsight™ is the ultimate development platform for heterogeneous computing. Work with powerful debugging and profiling tools that enable you to fully optimize the performance of the CPU and GPU. Not only do these feature-rich tools optimize performance, they help you gain a better understanding of your code - identify and analyze bottlenecks and observe the behavior of all system activities".