Intel has said they are working on hardware fixes for Spectre and Meltdown, but they haven't been very specific about things lately. Anandtech decided to give them a ring and Intel told them a few more things about their upcoming processors. Amber Lake will not have any hardware fixes since it is basically Kaby Lake. Whiskey Lake will have some hardware fixes and Cascade Lake will have the most hardware fixes. Another thing that Intel did mention in their discussion was that Spectre Variant 2 hardware fixes will have minimal impact on performance. The big performance marker is tackling Spectre Variant 2. When fixed in software, Intel expects a 3-10% drop in performance depending on the workload – when fixed in hardware, Intel says that performance drop is a lot less, but expects new platforms (like Cascade Lake) to offer better overall performance anyway.