I don't think that load on the download servers is an issue now. CDNs do a great job of distribution the load. The concern is more that some bugs (especially GP

I don't think that load on the download servers is an issue now. CDNs do a great job of distribution the load. The concern is more that some bugs (especially GPU related) only show up "in the wild". A slow rollout limits the damage if there is a show-stopping bug in the release.