We've just released another batch of patches, taking us from 984.2 to 984.4.
The devnotes can be accessed directly (as text) at:
http://www.microsabio.net/dist/50rel/ashdevnotes.txt or as CHM on the main documentation page.
Nearly all of the patches only relate to A-Shell/Windows (or ATE) so currently it is available (on the main MicroSabio download page, at
http://www.microsabio.com/a-shell50.html )for ashw32.exe, but the other platforms will follow shortly.