Pre-releases are already online for Part 2: Pre-release part 2 videos
My comment was a little confusion. It’s 76 3D samples, so in reality i have 24 times that in 2D images 
yes, segmentations are what you refer to as “less data hungry”. the reason is that you have much more information to back propagate through the network. a segmentation can be seen as a classification for every pixel and as such you get more info from a single sample.