Brief approximation:

• Check that SVN compiles and runs on Linux
• Check that SVN compiles and runs on Linux with --without-pch
• Check that SVN compiles and runs on Windows
• Check that SVN compiles and runs on OS X
• Run Windows autobuilder
• Update public trunk checkout
• Ensure it is clean (svn st --no-ignore)
• Run source/tools/dist/build.sh
• Test on Windows:
  • Delete %appdata%\0ad\cache
  • Extract release
  • Run pyrogenesis.exe, check everything seems to work
  • Run Atlas.bat, check everything seems to work
  • Delete %appdata%\0ad\cache
  • Build Debug version, check everything seems to work
  • Run test project
• Test on Linux:
  • Delete ~/.cache/0ad
  • Extract release
  • Build, test_dbg, run game, run editor
  • CONFIG=Release build, test, run game, run editor
• Test on OS X:
  • Update MacPorts
  • Same as Linux (but editor won't work)
• Update OBS packages ​0ad, ​0ad-data:
  • Update version numbers in 0ad.changes, 0ad.dsc, 0ad.spec, debian.changelog
  • Replace .tar.gz with new version
• Update ​PPA packages:
  • Find an Ubuntu machine.
  • Copy source/tools/dist/ubuntu/ into a place for packaging
  • Update changelog files
  • Update build.sh version number
  • Run build.sh. (Optionally disable the debuild -b lines because they're not needed, we only require the source packages.)
  • dput ppa:wfg/0ad <source.changes>
• Update ​Gentoo package:
  • Bump version number
  • FEATURES=test emerge 0ad
  • Upload to Bugzilla
• On error goto beginning
• Upload releases to server
• Verify sha1sums on server
• Upload to Sourceforge: rsync -v --progress -e ssh 0ad-${SVNREV}-*.{exe,gz,xz} philiptaylor,zero-ad@frs.sourceforge.net:/home/frs/project/z/ze/zero-ad/releases/
• Update release redirects to point to SF
• Update LatestRelease page (all links and checksums)
• Announce release
• ?
• Profit