This will not work on the latest W10 build 10025. It will install alright, but won't be activated. And thus, no updates and nag screen at every boot asking for activation.
There may be limitation of use in the version of windows shown before each download link and the 2 BETA can't work together I think (win10 & ess9)
ESET NOD32 Antivirus 9.0.377.0 ESET Smart Security 9.0.377.0 Both are out, depending on which lang. you may not directly see them (yet) on the official page. But they're coming.