As of my install upgrade to this latest build of Win10x64 beta 17682.1000 from the Insider's program yesterday, I noticed on my little checklist of Things to Do when installing new builds that the Superfetch service is simply gone in this build. I have searched out the Microsoft blogs on this build and not a word on Superfetch being deprecated anywhere--not in a Bing search or a Google search. I suppose I should add that since Oct.1/2014 when I started the Insider beta testing (yes, the Fast Lane is addictive) that I have never installed a build in which the Superfetch service was simply AWOL...! Don't know if this is a build bug, an auto-config feature (omitting the Superfetch service when the boot drive is detected as an SSD or an NVMe drive--because I always have to completely disable superfetch right after a new build install because of my NVMe boot drive, anyway--Superfetch actually slows me down somewhat but more importantly it adds unnecessary writes to my NVMe drive), or if the service has been permanently deprecated in Windows in the RS5 builds and beyond. I suggested a year or so back to Microsoft that they disable the Superfetch service when an SSD/NVMe boot drive is detected upon OS install/upgrade, but as Microsoft has said *nothing* about this, I really wasn't expecting it... Anyone know--anyone else noticed this? I still had to turn off prefetch in the registry, but Superfetch is simply gone.