It's familiar because it is the evolution of the Catalina 34, first introduced in 1986 (coincidentally my boat). One of the few, if not the only, boat of its era with an aft head and huge V berth (I can sleep athwartship!). The interesting part of the layout is that no one has to sleep with their head against a wall right next to the "toilet".
The C34 stopped production between 2007 & 2009 with 1,801 hulls built. It was followed by the C355, same layout, larger head with separate shower, walk around V-berth berth, and other CY improvements, including that wonderful new table, which was first built for the C440.
The C356 is a nice boat.
Catalina 356, l like the concept, seems really comfortable & familiar.