Updates to the Spline Chamfer Modifier let you use fixed radius for consistent circular corners.
Use Fixed Radius
When you turn on Use Fixed Radius in the Spline Chamfer Modifier, the chamfer uses the radius value you set and produces circular corners at the affected vertices. You get consistent corner radius along the spline instead of distance-based chamfers that vary with geometry.
Auto-weld Vertices
The Spline Chamfer Modifier can automatically weld vertices created by the chamfer to neighboring vertices that share the same (or nearly the same) position. This reduces duplicate vertices and keeps the spline clean without manual welding.