The present invention discloses a seatback latch assembly integrated into an interface between a seatback pivotally supported to a seat bottom. The assembly includes a pair of floor supported stanchions defining a package receiving space therebetween. A seatback sector forms a portion of the seatback and is pivotally secured between the stanchions within the package space for rotation between upright design and forward folded positions. A cam is pivotally supported within the package space between the stanchions and so that an abutment edge of the cam engages a shoulder location of the seatback sector in the upright design position. The cam is influenced to a disengaged position, resulting in rotation of the seatback to the folded position.