I think the dimensions are correct and our best guess is the motivation for the revisions are to improve the light air performance. We believe Glenn was quite impressed with the performance of the A3's at the 2007 WC in Islamorada. The Flyer design series has always been a great boat in breeze but the A2/A3 has had a lot of success against it in lighter air (Melvin 2005 WC, Guck 2007 WC, and also Pease Glaser dominating the lightest air race at the 2007 WC). The beam locations are similar to the A3 and the additional volume in the aft sections and the smaller bows make the boats more similar. The big question mark will be the curved foils.
Several of us, myself included, have six on order for delivery in October to the US.