Let's assume that Olivier wants to do a bugfix release of xfwm4 and that the previous release has been xfwm4 4.6.0.
If the 4.6.0 release was done correctly, there should be an xfce-4.6 branch in the xfwm4 repository.
These are the steps Olivier needs to go through for a proper release of xfwm4 4.6.1:

1. Check out the stable branch with

   git checkout -b xfce-4.6 remotes/origin/xfce-4.6

2. Make sure the application compiles and that

   ./autogen.sh --enable-gtk-doc ... && make distcheck

   works; commit build fixes as needed

3. Update the NEWS file
4. Update the ChangeLog from git with

   git log > ChangeLog

1. Update the major, minor and micro version to 4, 6 and 1 in the configure template (e.g. configure.in.in)
2. If the component is or contains a library and there were new symbols added since the last release, update the libtool version in the configure template
3. Remove the git from xfwm4_version_tag() in the configure script template
4. Rebuild the translation files (po(-doc)?/*.pot?) to update Project-Id-Version and prevent problems during make distcheck
5. Run

   ./autogen.sh -enable-gtk-doc ... && make distcheck

   again to make sure everything builds fine; fix problems locally without committing

We should now have a release tarball called xfwm4-4.6.1.tar.bz2.

1. Commit all local changes with a commit subject like this:

   Release 4.6.1!

2. After the commit, create an annotated tag for the release with

   git tag -a xfwm4-4.6.1

3. Push the release commit and the tag with

   git push && git push --tags

You can sign tags with a GPG key by adding an additional parameter to the git tag command. For more information about tagging read the git-tag manual.

1. Compute the SHA1 checksum of the xfwm4-4.6.1.tar.bz2 tarball generated by the last run of make distcheck with

   sha1sum xfwm4-4.6.1.tar.bz2

2. Open https://releases.xfce.org/ in your browser, log in with your Xfce HTTPS credentials
3. Click on Release New Version link next to your project (xfwm4 in this case)
4. Follow the instructions presented to you by the release manager software to upload the xfwm4-4.6.1.tar.bz2 tarball with the SHA1 checksum you computed before
   1. For the announcements, please only pick mailing lists that make sense. Everything should be announced on announce@xfce.org and xfce@xfce.org. Software affecting developers should be announced on xfce4-dev@xfce.org in addition, and so on.

1. Add the git back to xfwm4_version_tag() in the configure template; commit the change
2. Don't forget to add the version to your project on http://bugzilla.xfce.org/
3. You might want to update the following websites:
   • Freshmeat
   • Gnomefiles
   • others
4. Celebrate