Watch for little nuances in the Watchtower. They typically introduce things even years in advance by subtle inferences. The idea of the GB being the Faithful Slave was introduced little by little so it was no great surprise or shock to the dubs. Those word bombs they use will start showing up on some thought they discuss. You know the ones: "evidently, likely, surely then."
Since I don't read their stuff often can't say if there's anything in the offing. I do believe we'll see some attempt to get more money out of the rank and file. Maybe a new understanding on tithing or just fees, which they seem to be tacking on more and more these days.