You guys got my curiosity up.
The "handle" is actually a spring load to keep the screen body tight to the block. A 1/2" change is pretty dramatic and should have led to a change in the part number suffix.
I have a 2003, 2010 and 2015 version in the house.
The dimpled top is the 2003 version, second the 2010 version. Both have been sectioned.
The new I have is a 2015 production date on the "CA" box. Since I ain't gonna section that one which I am about to install I had to re-zero the caliper to account for the flange.