Build 160 is the current live build. It carries the new locomotion, knockdown and ragdoll, shove and tackle, and fixes to the multiplayer stations.
Start a fresh save. A save file records the character system it was made with, and this build changed it; an older save will not load correctly.
Build 160 contains work through session 74. Everything finished since then is in the project and in no public build yet; the roadmap marks those entries as built but not shipped. Build 161 was not deployed.