Part of running Ubuntu releases from Alpha through to release and then starting all over again, is following the Development forums posts for a particular release and the RSS feed of updates to that release.
In the beginning, the number of updates in my RSS reader is always larger than that of the posts in the forum. But in the last week or two, the number of new posts in the forum at any time is likely to be greater than the number of updated packages. A good sign about the uptake of Ubuntu. In fact, thinking back to earlier releases, I can't remember the Development forum for a release having this much activity as release approaches. It looks like a lot more people are trying out Beta and RC releases than in the past.