The FCC’s Public Notice regarding a FirstNet request to set a deadline of July 2017 for incumbent relocation from the broadband spectrum was published in the Federal Register on November 25.   The Comments are due to the FCC on December 9.

https://www.federalregister.gov/articles/2015/11/25/2015-30111/public-safety-and-homeland-security-bureau-seeks-comment-on-firstnets-incumbent-relocation-proposal