https://www.centos.org/modules/newbb/viewtopic.php?topic_id=25878&forum=53
My current understanding is that the ongoing build of CentOS 6.0 is still running in minimal mode. I expect it to pick up speed once all the current CentOS 5.6 updates have been built and pushed to the update queue.
I will be discussing the 6.0 build status with Karanbir in the next few days and hopefully will have something a little less tenuous to report early-ish next week.
I think it is fair to say that as CentOS 6.0 is a new entry into the product line, it may spend somewhat more time in QA whilst the critical eyes give it close scrutiny.
-- Alan
Presumably, this means that it is reasonable to expect a longer window than the early optimistic estimates of two weeks after the CentOS 5.6 release.