We're happy to announce the second milestone release for Kotlin 1.2. The primary focus of this release is concerned with stability and bugfixes in Kotlin compiler and tooling as well as improvements of Kotlin standard library. It also includes many of the tooling features available in the upcoming release of Kotlin 1.1.4.
We appreciate your feedback regarding the new features or any problems that you may run into with this release.
The complete changelog since 1.2 M1 can be found here with some major changes listed below.