Kotlin/Native is a target for the Kotlin programming language. This package would allow local compilation of native Kotlin libraries without needing a build tool like Gradle, which would install a prebuilt version of the Konan compiler in the user's home directory. This is not a replacement for the kotlin package, it is meant to be independent, as it is a separate compiler toolchain. In addition, this package does not require multiple JDK versions to build (thankfully), so it can actually be updated, unlike the kotlin package.
Yes, the repository lives at https://github.com/JetBrains/kotlin-native/.