Pages are displayed faster.
Strip can read more image file formats.
"Float page number" bug fixed.
Strip can't look for pages that doesn't exist anymore.
Widgets are insensitive if useless.
The horizontal cursor can't have the focus (it caused problems where using the arrows).
The "mode" toogle buttons are replaced by sexy mode buttons.
There is a new greeting screen.
The rotation icon now change depending of how the pages will rotate if clicked.
"Display shadow" option removed, now strip display the shadow only in double page mode.
"Enhance image" tool (no yet present) removed from the feature list, it would made Strip slower and dependent of the Python Imaging Library, and is not really usefull.
Strip is not dependent of the Python Imaging Library anymore.