Kotlin is a statically typed programming language that runs on the Java virtual machine and also »
Kotlin is a statically typed programming language that runs on the Java virtual machine and also can be compiled to JavaScript source code or use the LLVM compiler infrastructure. Its primary development is from a team of JetBrains programmers based in Saint Petersburg, Russia.
kotlinx.serialization 1.2 Released: High-Speed JSON Handling, Value Class Support, Overhauled Docs, and more 
Kotlin 1.5.0 – the First Big Release of 2021 
Technology Preview: Jetpack Compose for Web 
Why Learn Kotlin? 
Do you remember your first introduction to Kotlin? New Users Survey