As I see it:
- The goal of Kotlin is to be as fast as Java and have full interoperability with it, but to be more concise and to be simpler than other JVM languages as for example Scala.
- It's for people who want to code in a language with different syntax and features than Java, but don't want to leave the Java ecosystem (JVM, libraries, community...) and aren't satisfied (or enough impressed?) with the other JVM languages.
Oh, and that list with programming languages isn't really reliable. When I go to J in the table I see: Java, Java 2 Micro Edition and Java Servlet. Micro edition and Servlet aren't languages, all 3 entries should be merged into just one - Java. I can assume how many other errors are there. I see jQuery is a language too! :)