Here in Germany I am yet to see any job posting about it.
It is all about Java, Scala and Clojure.
It is all about Java, Scala and Clojure.
I don't think one can make any pronouncement about Kotlin's success or failures for several years.
This will of course improve for Kotlin, specially if they get some Google blessing.
EDIT: Also forgot to mention that on Swift's case, it is a first class language being pushed by the platform's owner, not a 2nd class language without any kind of consideration from the platform SDK.
And the fact that 1.0 RC was just released this month might tell you other reasons why. How many Scala jobs did you see advertised when 1.0 was released in 2004?