A Research Workshop is an opportunity to collaborate with others on a Moodle research initiative, as described by Michael de Raadt,
A research workshop is an opportunity to begin or continue a collaborative project that actively involves researchers. The goal of such a workshop is usually publication of papers, although it may lead to other things, such as improvements in Moodle or new add-ons.
Research workshop proposals are due this coming Monday, August 12th to be considered for the MRC coming up in October. To learn more and submit a proposal visit http://research.moodle.net/mod/page/view.php?id=23.
For the full announcement check out the official Moodle news forum: https://moodle.org/mod/forum/discuss.php?d=233769.