From other pics of both the VWM Blade and Falcon in one picture, it looks like the Falcon has about 25 mm (1 inch) more bow height and the same beam height / clearance.

It also appears strongly that the falcon hulls get wider quicker when going from the bow to the mainbeam. This will have added volume to the bows. I suspect the underwater body of both boat not changing much. So to my eyes it appears there is more reserve bouyancy in the bows with maybe a tad more at the keel line as well (as the side now go straight up). This could well just be the mod that it needed. On the upwind the VWM Blade was already a rocket so the underwater body was alright there. It just needed an extra bit for reaching and broad reaching in big wind. Would seem logical to put that extra bit a volume just above the waterline (as reserve bouyancy). The more rounded decks at the bow do help in the dive recovery; I know that much from the modification on my own boat.