The main feature in this release is the portable mode support. When in the portable mode, Guide will save (and load) preferences to a .ini file (that lives alongside guide.exe). To use the portable mode, either enable it from the preferences dialog:
change portable=0 to portable=1 to enable the portable mode.
There are a few other intutive improvements too -- remembering node state, the first visible line per node, search dialog improvements, better east asian language support etc.
So download, have fun, but remember this is an alpha release! Enjoy!