Update 1 of the OS X Yosemite Beta was released to developers earlier today. The first update using the new name. This to me is only a logical move, to stop confusion among future OS X Beta Seed Program members – interested end-users without a (paid) Mac developer membership.
You may have used this command
defaults read /Library/Preferences/com.apple.SoftwareUpdate CatalogURL
From a previous blog article about the CatalogURL, but this one errors out on Yosemite with:
The domain/default pair of (/Library/Preferences/com.apple.SoftwareUpdate, CatalogURL) does not exist.
Luckily we have this file: /private/var/db/SUPrefOverrides.plist
And that leads to the following URL:
Add this in front of the URL and you are ready to receive Yosemite updates. Even without SUPrefOverrides.plist
sudo /usr/sbin/softwareupdate --set-catalog