I have set up a page for documentation on the wiki:
http://wiki.documentfoundation.org/Documentation
Right now it has the task list and the wish list.
I expect it will change a lot and become a "dashboard" for the project,
with those items on another page or two.
At some point we'll need to split the docs section up into working docs
(things we're working on) and pages intended for users to read, just to
minimise confusion for ordinary users.
Also, right now it only has user-docs tasks & wishes, because that's my
area. People interested in docs for programmers, system admins, etc are
welcome to add their topics, too.
It's linked from the general Tasks page that Andreas set up earlier,
http://wiki.documentfoundation.org/Tasks
--Jean