Fantastic idea - I really hope it does well [smile]
A subject as large and diverse as DirectX really suits an FAQ/Wiki resource.
My understanding is that it's still Work-In-Progress, and that various tweaks and features are still being worked on. The initial release that was publicised in the thread I linked to above could be interpretted as a "call for contributions" so as to get some usable data into the system to test the various features and so on...
I've added a few things over the last couple of days (See the list here), and I intend to spend a bit of time putting more stuff in this weekend.
Now, go have a look at it - http://nexe.gamedev.net/directKnowledge/, and ideally if you've got something (anything!) to contribute do so [grin]
Right now, I'm gonna go eat some bangers and mash [inlove] and head off to the pub for some pool and pints [grin]