I received my 10 30" straight sections yesterday. As with O FasTrack, the roadbed is three 10" straights, with a continuous rail joining the sections. The "ball" of the joints on these is smaller than my 10" straights. You can actually see a gap between the ball and socket.
Hope to do some more work on the layout today. Loco is continuing to run perfectly, no change on the performance of the turnouts from previously reported (imperfect).