I hope they do adopt that suggested change to method calls. Swift is a nice language, but there's still some awkwardness due to its required compatibility with Objective C. I think if you don't come from that background, then having all named arguments except the first one seems really arbitrary and nonsensical.

The title they chose implies that they're actually changing the APIs to take full advantage of Swift language features. Perhaps they should have named the article "We're renaming some classes and methods."

If it is one that that should be known about Apple software by now, is that things will change from under your feet. :)

Could they just go all the way and use a mandatory first argument name to make things even more concise? That would get away from something that annoys a lot of people about Swift, the implicitly unnamed first arguments.

Something like this:

    class BezierPath: NSObject {
      func add(LineTo lineTo: CGPoint) {}
      func add(ArcWithCenter center: CGPoint, radius: CGFloat, 
                          startAngle: CGFloat, endAngle: CGFloat, 
                          clockwise: Bool) {}
      func add(CurveTo endPoint: CGPoint, controlPoint1 point1: CGPoint, 
                          controlPoint2 point2: CGPoint) {}
      func add(QuadCurveTo endPoint: CGPoint, controlPoint: CGPoint) {}
    }

    class main {
        func run() {
            let path = BezierPath()
            let point1 = CGPoint()
            let point2 = CGPoint()

            path.add(LineTo: CGPoint(x: 100, y: 0))
            path.add(ArcWithCenter: CGPointZero, radius: 20.0, 
                             startAngle: 0.0, endAngle: CGFloat(M_PI) * 2.0, 
                             clockwise: true)
            path.add(CurveTo: CGPoint(x: 100, y: 0), controlPoint1: point1, 
                             controlPoint2: point2)
            path.add(QuadCurveTo: point2, controlPoint: point1)
        }
    }

    path.add(LineTo: CGPoint)

    path.addLineTo(point: CGPoint)

I do wish the Swift developers had allowed actual Objective-C calls in Swift to make it look the same.

Objective-C

  [aPath addLineToPoint:CGPointMake(200.0, 40.0)];

  aPath.(addLineToPoint:CGPoint(200.0, 40.0));

Objective-C

  [object selector1:item1 selector2:item2];

  object.(selector1:item1, selector2:item2);