Since the "brand new, consolidated" help center has already been out on all sites in Stack Exchange network since June 5, 2013, and the new closing reasons are about to be launched this week, I'd like to point out that the Closed Questions section in help-center is for the older UI and should be updated as soon as the closing reasons are rolled out to other sites.
The current help center lists the following close reasons (on all sites):
- exact duplicate
- off topic
- not constructive
- not a real question
- too localized
But the new close reasons/UI is as follows:
I think that the help-center about Asking can use the same text as in the featured post announcing new closing reasons.