I interpret it to include not only block detection, but also power management (taking the place of PM42s), plus the transponding... all in one package. That woukd eliminate a bunch of wiring.
Ive been content with their occupancy detection, but tore out most of the PM42s for PSX cards... gave up on transponding (jmri / cats both do train tracking just fine).
Maybe Dgtrx has made some additional upgrades with the package deal...
Jeff