There is finally a definitive review of the new Ribble Sportive on Bikeradar. There has been some discussion as to who designed this new frame. From what I understand, they are designed by a US company called Pedal Force and the new Ribble Sportive is simply a rebadged version of the Pedal Force QS3.
I think Ribble should have kept the same colours in red and white. The Ribble paint job does not look great. You can tell from the design and the paint job that there is no doubt as to who designed it.