“Based on the 2.6.32.45 Linux kernel, and with all of its base
packages recompiled in the T2 System Development Environment, the
new release is a “massive upgrade” to the 5.1.x series.Users can now easily upgrade from Xorg 7.3, which is still
included by default to support older hardware, to version 7.6 for
newer video devices by installing a single PET (Puppy’s Extra
Treats) package. Because of several problems, the gtkam GTK2 GUI
for libgphoto2 has been replaced with PupCamera for automatically
detecting digital cameras.