Hi Sarah, I'm one of the leaders of the inline docs initiative for 3.7 (and beyond).

I notice you didn't mention the forthcoming Code Reference, which will live at develop.wordpress.org and is in actuality the driving force behind documenting these hooks and filters.

The Code Reference will use a parser to pull the inline docs of hooks, filters, functions, and classes into a dynamic web reference (similar in many ways to queryposts.com). So if the docs aren't there, they won't get parsed, thus the big push!

It's also important to keep in mind that ultimately the Code Reference will in-effect replace huge chunks of the Codex, including the Function Reference, Class Reference, Filter Reference and a bunch of other stuff. We'll bring together vetted examples and other interactivity we would have had to manually generate before.

And yes, it's definitely about making extra information about all hooks and filters more readily available to anybody who wants to know.

If you'd like to know more about future plans of documenting WordPress, check out the roadmap we developed over the summer.