Bossk will be exclusive to set 8097 (Slave I), never appearing in the LEGO Star Wars universe previously.
Minifigure Parts and Accessories
Bossk is a rather simple minifigure with only three main parts; head, torso, and legs.
I would have really liked to see more detail on the arms and legs to better reflect Bossk's appearance in Empire. I guess if they perfected him right out of the gate, then we wouldn't have much to look forward to in future sets!
Although not shown here, Bossk was often seen sporting a unique rifle. Hopefully this will be available with his minifigure counterpart.
Army Building Potential
The ABP for this figure is high. That head has to be sought after for alien minifig customs, Trandoshan or otherwise. The limiting factor; however, is the price of the set. Slave I (8097) is set to retail at $79.99 USD. As with Boba, lets hope for an early release of a magnet set.
The head goes without saying, but I'm really hoping we have 'Devours His Prey's' signature rifle to look forward to with this set.
(Pictures from Eurobricks and BrickLink)