The Rucker Long Range appears to be the byproduct of a Rucker and a GR2 having a child.
Along with the larger sizes, the Rucker Long Range offers two storage areas, in similar fashion to the GR2. This will lead to the ability for much more compartmentalization and order within the ruck (until the cadre makes you dump it out).
Of course, it carries all the hallmarks of the Rucker which include 210D material for the back, lumbar support, drain holes, 4 handles, and hip-belt compatibility.
There also appears to be extra padding around the ruck plate area.
It is highly likely that these rucks will be the standard required for top tier events, like Selection and Team Assessment.