At the time of writing, the version of Android Studio that comes bundled with full Kotlin support is Android Studio 3.0. The canary version of this software can be downloaded from https://developer.android.com/studio/preview/index.html. Once downloaded, open the downloaded package or executable and follow the installation instructions. A setup wizard exists to guide you through the IDE setup procedure:
Continuing to the next setup screen will prompt you to choose which type of Android Studio setup you'd like:
Select ...