This is another development release leading up to GTK+ 2.16.
Overview of Changes from GTK+ 2.15.3
- GtkAction: More compatibility fixes to make PolicyKit-gnome work
- GtkFileChooserButton: Don’t emit file-set when the dialog is canceled. But emit it when a file is received via DND
- GDK: Use Xrandr 1.3 for tracking monitor information, if available
13 bugs fixed in this release!
Read the original announcement for more info and downloads.