Old board was 34' tall and 50' wide. The new board in the SEZ will be 48' tall and 131' wide. The new board in the NEZ will be 36' tall and 72' wide. New board will be about 370% bigger than the old one.
Looking a little closer, it appears as if the video portion will be about the same dimensions with rectangular banners on either side. That would make the "regular" video portion roughly 48' x 71' which is double the size of the old one. The banners on either side would be 48' x 30'.