For a moment, let's assume Newton isn't released yet because openstack-manuals hasn't branched yet. I'm working on some significant beneficial changes to the networking guide that resolve a number of issues we probably should have addressed a while ago... ideally before the release of Mitaka... but I couldn't accomplish it and no one else contributes to this particular content. The networking guide isn't continuously published. When my changes to it merge in master, they are essentially invisible to operators until the next release. Operators often run a stable release or two behind master. Thus, only merging in master (which becomes the next release) limits the audience of the changes. Backporting such changes to the prior release (if they apply) makes them visible to a wider audience. Furthermore, this particular patch resolves a number of issues with the Mitaka content. Finally, doesn't the same issue of translation apply to continuous-release content such as the admin guide?