So we know Shreveport is one of them.
I'm going to go out on a limb and say that the other 2 are purely to piss somebody off due to recent events,
So I'll venture that ILG is the 2nd.
As for the third. I'll say it's SWF. (New from CLT)
Now granted none of these would be entirely new stations in the system. USX previously served SHV and ILG. SWF currently has service to PHL.
SWF has JetBlue and Airtran service to several Florida cities and ATL. USX service to CLT wouldn't offer SWF passengers many new travel options.