The Surface Fillet tool has a new Section Type option called G3 Curvature. This setting lets the fillet maintain G3 continuity with both sets of surfaces. G3 continuity means that the curvature’s rate of change is the same on either side.

The Curvature setting has been renamed G2 Curvature.

When calculating the fillet, the V degree is adjusted so that the surface has enough CVs to provide the required continuity on both sides. Degree 7 is needed for G3 Curvature.