I had the same question as Tina after Peasantman this weekend. Yesterday I checked the Rev3 Williamsburg site and found the answer in last year’s athlete guide. It will be an in-water start (see page 14). Also, if you haven’t already joined, there is a Rev3 Williamsburg Facebook group. There seems to be a supportive mix of Rev3 folks and course veterans who will answer specific questions about the race.