It's been a long and hard road to acceptance for AMD's Sensor Fusion Hub Linux driver. The first revision was submitted to the Linux kernel Mailing List in January 2020. It took eight revisions and a lot of effort before Jiří Kosina finally accepted it into the hid.git#for-5.11 tree, almost guaranteeing that it will become a part of Linux 5.11.
Intel developer Manasi Navare has submitted a series of patches for the Linux kernel that brings support for variable refresh rates on Intel's latest graphics chips to the Linux kernels i915 driver. The feature is only enabled on Tiger Lake, Sapphire Rapids and newer Intel graphics chips.