just found this online. sorta deals more with the possibility of a larger field, but it sounds like the NCAA is atleast considering other options.
http://www.sportsbusinessjournal.com/article/64712
The NCAA also says it is looking for a 14-year term on its next media deal, with a “no-penalty, early termination right in favor of the NCAA,” according to the RFP.
The NCAA is considering whether to opt out of its 11-year, $6 billion contract with CBS after the Final Four in April. The deal has three years and $2.131 billion remaining.
Greg Shaheen, the NCAA’s senior vice president for basketball and business strategies, is leading the RFP process.
“There continues to be dialogue with a number of entities that are interested in submitting a proposal,” he said, but no time frame has been established. Shaheen has said that the NCAA is doing due diligence to explore alternative tournament formats, but it is not leaning in any direction.
However, industry sources indicated that the NCAA has until Aug. 31 to exercise its right, though it hopes to conclude the process much earlier.
The NCAA could keep its current deal; make a new deal with its longtime broadcast partner, CBS; make a new deal with a new partner; or create a split rights agreement. In the split-rights deal, two broadcasters would submit a joint proposal to share the media rights.
from another article:
Currently, CBS broadcasts the remaining 63 games of the NCAA tournament proper. Most areas see only eight of 32 first round games, seven second round games, and four regional semifinal games (out of the possible 56 games during these rounds).