3.6 is out, to your build buttons!
These are the settings for building, on the Tools menu (pt_PT is shown, adapt to your own localeLocale Locale = language version, often a combination of a language code and a region code, for instance es_MX denotes Spanish as it’s used in Mexico. A list of all locales supported by WordPress in https://make.wordpress.org/polyglots/teams/):

Note the revision number (24973)
Make sure you build and test first, before releasing