If you haven't gotten on the 901 beta program, please do. Much has been
rewritten and many things run quicker.
An incompatible change is coming to (x m} y) soon. If you run the
current beta you can get nonce errors for the cases that will change,
rather than getting unexpected behavior from
J901-beta-d is available as a zip install package for windows/mac/linux.
Get your zip install package:
https://code.jsoftware.com/wiki/System/Installation/Zips
After your first install of J901 beta you will be able to do subsequent
beta updates with pacman.
The list of changes is in release not
