neowin[.]net/news/even-modern-intel-cpus-are-losing-up-to-36-performance-with-the-new-spectre-bhi-patch/
vusec[.]net/projects/bhi-spectre-bhb/
The good new for most of us is that Windows isn't mentioned [yet] -- only Linux, which has had the kernel patched. The bad news is that the hardware fixes Intel & ARM developed to fix the vulnerabilities don't go far enough. And like earlier patches for Spectre, performance takes a hit.