http://hraunfoss.fcc.gov/edocs_public/attachmatch/DOC-298799A1.pdf
This paper focuses on the proposal to do another reshuffle of TV providers to allow for reclaiming and auctioning more TV spectrum.
http://download.broadband.gov/plan/fcc-omnibus-broadband-initiative-%28obi%29-technical-paper-spectrum-analysis-options-for-broadband-spectrum.pdf
I have no reason to doubt the technical veracity of these papers. But the real driver of the policy is, IMO, spectrum auction revenues.