I'm wondering if there is interest in creating/maintaining a blog for the
community. Apache has infrastructure for this and some instructions for
setting one up. I have seen other projects use a different service, so we
could go that route too. I'm not a big fan of the Apache blog layout, but it
may be the easiest thing to do.
Other than an email announcement, there is no other place that I know of
for publishing community information. If you search for "Accumulo 1.6 new
features" or "Accumulo 1.6 planning" you won't find much. I'm thinking of
- A place to highlight Accumulo features
- Major features planned in next release
- A release happened
- Explanation of new features, how to configure, etc.
- Notes from community meetings
There does appear to be some process mentioned in  regarding previews
and approval before publishing. Another thing to consider, which is not
mentioned, is cross-posting to a company blog site as well.