Hexus posted a story that Intel has announced that it has updated the microcode for all of the products it has launched in the past five years A quote from the article:

And in a blog post it gives notice of hardware level fixes in processors from H2 this year. In an email to HEXUS, and an associated blog post, Intel has announced that it has updated the microcode for all of the products it has launched in the past five years. Of course, it is talking about the CPU product range and their mitigations against the Meltdown and Spectre vulnerabilities. It may seem like this work has taken an eternity, but it has only been 74 days since the vulnerabilities came to light outside of a tight circle of security researchers and chip makers.

 Intel microcodes now updated for all products from last 5 years