No, AC, Alessandro Cantarelli is not a diffusion to the sartorial collection. Alessandro is the 2nd generation to run the family business, AC is meant to introduce his family's jacket making expertise to a new generation of guys who are ready for a really well made jacket but with a more casual, modern attitude. The Cantarellis also develop suits and jackets for some of the biggest names in fashion, but they keep this list quiet. One can only be humble when when one is at the top of the game.
AC will be available in US stores this September, please check it out at Odin