Rupert Murdoch's WSJ remains locked in a deal with CNBC which prevents its reporters from going exclusive to News Corp ( NYSE: NWS ). cousin Fox Business News. But evidently they've found a loophole for star tech columnist Walt Mossberg. In an announcement, FBN says Mossberg, who writes for WSJ and its subsidiary AllThingsD , will debut on the still small channel tomorrow morning at 11:30 AM. From then on, he'll be appearing on Thursdays. That Journal reporters will eventually migrate over to FBN is in the when, not if category. But it's a coup to have Mossberg, who's got quite a bit of star power for a tech reporter, to make the switch early. What we don't know is what about The Journal's relationship with Mossberg allowed them to move him over. Update : When asked for comment on the move, Mossberg responded: "My only comment is that I made the move of my own volition, for my own reasons. I can't speak for the rest of the Journal, but I would note that some other Journal reporters are already doing FBN." ...