Plans for Kotlin 1.4, an upgrade to the language due in 2020, include reimplementing the compiler to improve execution speed.
The developers of Kotlin at JetBrains believe that the focus of Kotlin 1.4 should be on “quality and performance” rather than adding “big” features. JetBrains promises the new compiler implementation will “be really fast, unify all the platforms Kotlin supports, and provide an API for compiler extensions.”
The new compiler implementation will be a multi-year effort, with only some parts of the new technology due to arrive in Kotlin 1.4. Specific plans for the compiler involve:
