I know of at least 3 girls with DGJS offers who will give up their places at SSCPS, probably around early Jan once their registration at DGJS is confirmed. So stay hopeful and good luck!
My friend's daughter has been on waiting list before and got the seat in mid-January, right before CNY. Good luck to all of you who are still waiting for the seats!
I think SSCPS has already called parents to fill up vacancy. May be only a few few few seats before September. Depends on how many parents giving up the G1 seat.