According to norwegian news, the ISAF event committee have voted and landed on the following proposal:

Men
windsurfer
single dinghy
single dinghy heavyweight
two man dinghy
two man dinghy high performance

Women
windsurfer
single dinghy
two person dinghy
two person dinghy high performance

Open
Multihull


Now it is up to the ISAF council, which can (and have earlier) decide otherwise. Then the multihull might be out and we get matchracing in ynglings instead, which would balance the score between male/female classes with 5 each.. I think the decision is made tomorrow?