<<If only Intel officially releases 17.12, then I'm all happy now.>>
Intel farmed it out to the OEMs. CRCinAU got his somewhere (don't remember), I found it also at Lenovo. His is a straightforward extracted set of saved folders, so it's the same thing as you'll get when Intel puts it up here. I ran Lenovo's executable and cancelled at the point of install. That way the extracted folders are saved but none of the ProSet stuff or setup runs.
A simple driver update, like you did in Device Manager, is the way to go. For a home user, ProSet is just overhead you don't need.
I'm still considering 17.12 as a Release Candidate. I get a rare failure to wake with it, but nothing at all like the other 17s which regularly failed to wake.
Previous driver I tried that worked as intended and which I had been using since last year, until trying 17.12, was 16.6. That's always been "Old Reliable".