I've heard thsat WMC in Memphis has a filed a request to move from 5, but I don't know all the details.
WMC has filed for a replacement channel on 17. That would displace an LD that is Spanish, with some local programming.
I get a reliable signal from WMC, for the most part. Unlike most viewers, I know enough to build a lo-band loop for 5; it works pretty well. But it does have issues with electrical interference.
What's unfortunate is that WMC could have gotten another channel. "The suits," I'm told, were afraid to give up that heritage channel.