In other discussion was information you are expecting Kotlin to be production ready later this year. Does this includes incremental compilation or what are your plans for this feature? I finishing Android application and it's painful how compilation takes still more and more time. Kotlin is awesome and greatly helps to fight with ugliness of android api but until compilation time gets better I can't consider to use it in next projects. With tears in my eyes I have to go back to java.
It amazes me that this issue has so few votes. http://youtrack.jetbrains.com/issue/KT-1382