The latest GTK+ 3.20 GUI toolkit, which is usually shipped by default with the GNOME 3.20 desktop environment, is ready for upload on the Ubuntu software repositories, for Ubuntu Desktop. available via a PPA (Personal Package Archive) repository that contains the latest GTK+ 3.20 packages, the Adwaita icon theme, a GTK3 port of Mozilla Firefox 47.0, as well as Baobab and Nautilus 3.20 apps.