He covers type inference too, which is much more painful not having:

Animal animal = new Animal();

val animal = Animal();

Swift also doesn't need the semicolons. You can also omit the () in if and switch statements. It all adds up to a lot unnecessary noise. The immutability of let is really nice too.

let animal = Animal()

In Swift I don't bother adding the type for Strings, Bools or Ints:

let foo = "Hello world"

let answer = 42

var isDone = false

if isDone {

  print("Correct: \(answer)")

} else {

  print("Wrong answer!")

}