In 2016, LibreOffice Conference will be hosted by the Faculty of Information Technology at Brno University of Technology, Czech Republic, and organized by OpenAlt, from September 7 to 9.
Details of Call for Papers, open until July 15, 2016, are available at:
https://blog.documentfoundation.org/blog/2016/04/08/libreoffice-brno-conference-call-for-paper/.
Registration for the conference is open at:
http://conference.libreoffice.org/2016/registration/.