Yes, as the header says, our cast from Milky Holmes will be on stage for the Wonder Festival event at Makuhari Messe. More details are available here:
WonderFest Official Site - http://www.kaiyodo.co.jp/wf/index.html
Event Details - http://www.whl4u.jp/stage.html
For our overseas fans, there seems to be a live feed from Nico Nico Douga as well.
More details can be found in the second link.