GNU Linux-libre continues to be focused on removing drivers and/or disabling functionality that relies upon non-free components like firmware/microcode blobs. Besides removing everything in-tree that depends upon non-free blobs, GNU Linux-libre also disables runtime support for loading any non-free kernel modules.
In terms of the changes done to this 4.5 kernel by the GNU folks, "Newly-deblobbed drivers in this release are qat_c3xxx, qat_c62x, adf7242, goodix touchscreen, and Qualcomm WCNSS SOC. Updated deblobbing was required by radeon, nouveau, skylake sound, and XHCI rcar drivers. Besides, there was plenty of code movement, especially within drivers/net/wireless."
The latest GNU Linux-libre kernel for those who want it can be downloaded from FSFLA.org.