This is more of a task, since it'll be on the wiki, but filing it under the Bigtop 0.4.0 umbrella JIRA
Here's the first cut: https://cwiki.apache.org/confluence/display/BIGTOP/How+to+release
please feel free to help improve/wordsmith it!
Personally, I'll be following these instructions for rolling Bigtop 0.4.0 out. Lets see how they work out for us