I upgraded to build 131 this morning and hit a hiccup on X11 TrueType fonts. About 75% into the install, Update Manager stopped complaining about files in usr/X11/lib/X11/fonts/TrueType. I moved the TrueType directory out of the way and the install proceeded.
After the upgrade worked, I found 6905518 which shines some light on the problem. The 'TrueType' directory becomes a symlink to /usr/share/fonts/TrueType. So I plopped my fonts in their new location post-upgrade and all is well.