In CBS announcing the launch of the new CBS Sports Radio today, a 24/7 sports talk network will debut on January 2 on eight CBS-owned stations, including WBCN, which is currently "America's Talk 1660." So it'll still be bird-fed, just sports laden.
http://www.cbspressexpress.com/cbs-radio/releases/view?id=32154
http://www.cbspressexpress.com/cbs-radio/releases/view?id=32154