It is slightly dihedral, so it's quite flat. Here's what Duotone shared so far
PERFORMANCE FEATURES
+ Surprisingly loose in roll for its AR
+ Great pumping ability - efficient to make it back out into the lineup
+ Easy and intuitive in turning behaviour
TECHNICAL DETAILS
+ Innovative dihedral for intuitive rail to rail turns
+ Zero sweep design for highest efficiency
+ Pumping optimized profile with very low stall speed
+ Light and strong carbon layup for a great mix of weight, stiffness and strength
+ Compatible with Duotone Aero AL, AL 3BS and Fanatic Carbon & AL fuselages
Front view, facing ike when in the water: