📣 Kotlin 1.8.20-RC is out with: ✅ New Kotlin K2 compiler updates ✅ AutoCloseable interface and Base64 encoding in stdlib ✅ New JVM incremental compilation enabled by default ✅ New Kotlin/Wasm compiler backend What’s new | Changelog Help us put the finishing touches 🪄 on the RC by reporting any lingering issues in YouTrack

That concept doesn't really exist or makes sense in Kotlin, but you can google "Kotlin stability", there's a dedicated webpage on the website.

I noticed that Kotlin 1.8.20 has been released yesterday but still not announced https://central.sonatype.com/artifact/org.jetbrains.kotlin/kotlin-bom/1.8.20