All of the test branches have now been updated, and I believe there's no critical or major issues left.
If you feel like helping out, BACK UP YOUR WORLD, read this thread, then opt-in!
http://steamcommunity.com/app/254200/discussions/0/135508489637345304/
If not, then this build should be live in the next few days.
Note : All the issues listed as comments have now been fixed.
Test patches are available on all branches:
beta_test
bleeding_edge
nightly_build
riskyanddangerous
staging