Oh..OK. I was thinking more of this method (from Verizon) for BB7 OS releases: BlackBerry® Software Updates
This link above would probably never post a BB10 update then. You would need loader or DM to install these so going forward we can only archive the leaked (or hybrid) versions I would think. I used to download the carrier releases from the link above in case I wanted to downgrade but being that they are OTA, the process has now changed.