Dear list,
Unstable is a branch of LyX master that reads, edits and writes the
current stable format. It is now available from:
<https://github.com/gadmm/lyx-unstable>
<https://launchpad.net/~gadmm/+archive/ubuntu/lyx-unstable>
(updated more-or-less weekly).
It has all the features (and bugs) from the master branch
(<http://wiki.lyx.org/LyX/NewInLyX23>) except those depending on the
newer file format. It can be used to test the upcoming version of LyX
without having to deal with file format conversion issues.
Other contributions at <https://github.com/gadmm/> include the
beamer-flex module that has been discussed recently.
Guillaume