From Rotoworld w/ Rotoworld comments:

Mary Wilson has taken over as controlling owner of the Bills.

She's the wife of late Bills owner/founder Ralph Wilson. According to the team, "a process will be established at an appropriate time for the sale of the franchise." Wilson will assuredly work to keep the Bills in Buffalo, but the team's future in Upstate New York is in question.

Source: buffalobills.com