I hope Remi is correct with the volumes of the new boards. It would be nice to see an "official statement" from Starboard regarding their published volumes and that they aren't using "virtual volumes" any more. I have an '08 iS 111 and Starboard said on this forum that the volume was 108L (the old virtual volume days).
It seems to me that the fin sizes listed are for "down wind slalom racing". Generally they are on the small side for figure 8 racing or free sailing.