根据CentOS官方QA上的说明，现在6.0的内部镜像已向外部镜像开放，预计将在几个小时内同步完成，到时即可在国内镜像下载到CentOS 6.0.  这次应该不会再往后推了。大家敬请期待吧。The internal mirrors will now be opening up for external mirrors to sync from. This may take up to a couple of hours to propagate throughout the system, but external mirrors should start seeing the 6.0 soon.

CentOS QA Blog: http://qaweb.dev.centos.org/qa/node/105