If you are already playing V2 you do not need to start a new game for this update. This small update just adds the night lighting changes in the map that I forgot to do.
If you are upgrading from the old Sherwoods pre V2 a new game must be started with this folks as the update adds my latest full map template to the map. The map now has more fruits, new installs, GMF, water trough mod, area changes, new textures, updated seasons snow mask and more. Have fun.