Hundreds have been shipped out worldwide, so we should see them in many people's hands very shortly (and if we can, we'll also try to get our hands on one to see how it compares to the previous models).
The reason for the extended delay is simple and complex at once. As CEO Grant Petty explains in the video below, trying to get the URSA Mini 4.6K and Micro Cinema Camera to do both global shutter and rolling shutter wasn't working as well as they had hoped, and wasn't giving them ideal performance. Thus, they've made these models rolling shutter-only (at least for the foreseeable future) to get them out into the world:
The company also released this short film shot by DP John Brawley on the URSA Mini 4.6K, followed by a "making of" video (you can download both of these videos in 4K/UHD, as well as sample RAW footage, from the Blackmagic site here):URSA Mini Short URSA Mini Making Of
from No Film School http://ift.tt/21xR1mA