The International Virtual Reality Photography Association (IVRPA) is conducting its 12th annual conference from June 3 to June 6 in scenic Vienna, Austria. There are several interesting presentations at the conference. Here is a video of one of the presentations.
Update: added a playlist of other videos.
This presentation is by Jorg Dietrich of Panoramastreetline.com (jump to 29:58):
In addition to workshops and panels, there will also be exhibitors, including Ricoh, which will showcase the Ricoh Theta 4K.