Since its public announcement, JetBrains has been very open with the development of Kotlin. This includes a public issue tracker, regular blog posts, conference talks, a yearly Kotlin census, and they even have their own conference now, KotlinConf.
You can submit your feedback, or leave your own issues and feature requests in the Kotlin issue tracker: https://youtrack.jetbrains.net/issues/KT.
Kotlin has seen four major stable releases to date, which are as follows:
- v1.0: February 15, 2016
- v1.1: March 1, 2017
- v1.2: November 28, 2017
- v1.3: October 29, 2018
Each of these releases has brought exciting new functionality to the language. Most recently, Kotlin v1.3 brought coroutine support for asynchronous programming.