UPDATE: Those are in fact the only two bolts that need to be removed. After they are out, press the piston back and the center section of the caliper pulls right off.

I've already swapped out the front pads to a low dust type and it was very straightforward. The rear calipers are unfamiliar to me. Is there more to separating the two parts than the removal of the two caliper bolts shown in the pictures below? Thanks