This footage was recorded a week or so before the Shoshinkai '95 event, these builds are also from that time period. These builds may show a more realistic view of how Super Mario 64 was developing at the time, instead of the demo, which only showed a specific set of levels. More levels are available, and graphical tweaks have been made. Little info is available about the specifics of these builds and their relation to the Shoshinkai build, but footage of them was interspersed with the Shoshinkai demo footage in promotional videotapes for the event that were given to visitors.
There are many more differences in this build.