The checklist is meant to be a "script for humans", something which should be possible to follow without turning on your brain.
Anyway, the checklist misses information on how to build release binaries for Linux and Windows. Linux is probably less interesting due to packages being available for some distributions, but they might be good to have around.
If would be awesome if someone could point me to, or contribute the necessary information to do Windows/Linux releases.
Note that setting up a development system isn't covered by this document. Also, if there are more than a few operations, it makes sense to create a separate document, which could gradually be massaged into a script.