i can understand them doing that with not wanting to confuse users who think if its on their site, it must be stable. even if its beta... but it sucks for those who know what they're doing and want to help test them. a lot of bios fixes get fixed because of user feedback with beta bios.
if my assumption is correct that they probably did this for not wanting to confuse people, couldn't they just create a sub category folder labeled "BETA - DO NOT TOUCH UNLESS YOU KNOW WHAT YOU ARE DOING" and place them there?
i'm still using the previous one that provided AGESA 126.96.36.199 myself. no issues with it.