Probably people who really have participated and not just for the early access to the new official release build
Could it be that MSFT Insider Team is putting the meltdown prevention code in for the next IP build release?
that will be good if microsoft call other brands mobos / cpu and make a better OS with the new updates bios..cauze from what i read is like the meltdown effect all this 3 OS / CPU / MOBO...
Afaik, meltdown should be "fixed" by the kernel patches (cu from jan. 3. 2018), AV/browser/etcetc... updates, spectre needs bios update.