There's a pretty comprehensive answer in this week's NERW...
*There’s a new TV station coming to the Boston market, assuming the FCC approves an application from Gray Television to move WSHM-LD across MASSACHUSETTS from Springfield to Boston.
It’s part of a major change window the FCC recently opened to low-power TV stations, allowing them to change channels and locations in ways that they can’t normally do as minor moves, which in this case will take WSHM from channel 20 on Mount Tom north of Springfield to channel 23 on the Cedar Street tower in Needham.
The move would come with programming changes at both ends; in Springfield, WSHM has been “CBS 3” since 2003, originally as an analog LPTV station on channel 67 and later on digital as virtual channel 33. As part of Gray’s “Western Mass News” operation, we’d expect WSHM’s CBS feed to be moved to a subchannel of the main Gray station there, ABC/Fox affiliate WGGB (Channel 40/RF 26), though in that heavily cable-dependent market, few are watching the over-the-air signal anyway.
Meanwhile in Boston, we suspect Gray is plotting a local sports channel, similar to ones it’s been building everywhere from Las Vegas and Phoenix to Connecticut, where it runs WWAX-LD (Channel 27) in Hartford. Who’d show up on such a channel? Probably not the biggest Boston sports teams, since the Red Sox own NESN and also control Bruins rights, but if other markets are any indication, Gray could be angling for rights to Celtics and a slew of minor league and college sports, too.