This says that it needs nothing to move on to the next level. Why hasn't it?
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Because it's in beta and that's not ready yet
See Joel's comment here
We're rolling things out in stages. The commitment phase will be rolled out later this week or early next week.
The commit phase has not been completed yet:
Also, Area 51 is still in Beta. It's always possible that the process will have to be tweaked to get better results. We don't want to advance sites too quickly while everything is still under development.
Also, Area 51 has not even been announced, yet, publicly. We don't want to rush a bunch of sites out the back door when only a small number of people have had their input.
There's no rush. Let this stuff bake for awhile.