FAQ - Kotlin - Confluence. The fifty-third Java-killer language for the JVM, which also attacks Scala here (the usual argument "Scala is too complicated", which on first glance is indeed true - Scala has few central basic features, which are then provided with many features for the programmer by the standard library and the good DSL possibility at the surface of the actual language). The question remains what will come of it, but since JetBrains is behind it, it will at least have a good IDE (JetBrains builds IntelliJ and other JVM IDEs, including PyCharm and with AppCode the only current OSX Objective-C alternative to XCode). And hey, anyone who names their language after an island near St. Petersburg already has a head start with me.