I gave up trying to create and link a wiki page for this, so here it is:

1) Check version numbers are correct
2) Check and update README
3) Check docs are correct
4) Run full test suite
5) Run all examples
6) Tag release
7) Build distro
8) Unzip distro on clean directory
9) Test all examples work from distro
10) check docs from distro
11) check readme from distro
12) test stopping and starting server using run.sh from distro
13) upload to jboss.org, including distro + all docs + javadoc
14) announce on user forum.
15) announce on blog
16) announce on twitter