Can Bike OS 5.7.1 (a.k.a. Puppy Can Bike 5.7.1) has been released. It is the update to Puppy Can Bike 5.5, and a remaster of Precise Puppy 5.7.1.
The name change to Can Bike OS is a result of Precise Puppy going into maintenance mode. As a result, future versions maybe based on alternate flavors of Linux, possible custom Wolf builds, or greater customizations with updated components.
Nonetheless, the main changes include Chromium browser replacing SeaMonkey, and the the inclusion of GIMP 2.6.