What is the difference between the stresses given for the depression point in the "Release Stresses" box and the "Release Lifting Loops" box?
Release stresses are the stresses after all the strands have been cut.
Release lifting Loop stresses -- Computation of critical beam stresses when Lateral beam stability checks are done during lifting and transportation
the "Release Stresses" box and the "Release Lifting Loops" box?
At Release the beam is supported on beam ends while at lifting points the support points are at different locations. So the difference between the two outputs are due to the different support locations.