These are the main resources in this area:
The mailing list for translators and documenters
(kde-i18n-doc AT kde.org), archived with plenty of other KDE lists at lists.kde.org. Main platform for discussions, problem reports and announcements regarding KDE translation and documentation. Quite naturally, this is the most up-to-date resource of information for you. Another list that often provides useful information or has answers to questions about technical difficulties is the main developer list at
(kde-devel AT kde.org)(get in by sending a mail with "subscribe" in the subject to
(kde-devel-request AT kde.org)). There is also a specialized list for technical issues of DocBook at
(kde-docbook AT kde.org)(subscription procedure is similar to the one just mentioned).
The KDE chat rooms at this page often lend the opportunity to "talk directly" (sort of) to the developers. It can also be used, of course, for translator meetings.