Hello! I'm happy to announce that JetBrains started an Early Access Program for IntelliJ IDEA 2020.1. You can download the EAP builds here (fully functional for 30 days, no registration/payment required): https://www.jetbrains.com/idea/nextversion/
Here's release notes blog post: https://blog.jetbrains.com/idea/2020/01/intellij-idea-2020-1-eap/ In particular, these builds already have decent support for Java 14 Preview features, including records and patterns in instanceof. There are still many known problems (most notable with formatting and refactorings), but all the basic functionality (syntax highlighting, error highlighting, code completion, symbol resolution, navigation, etc.) already works. Also, for patterns, we have an inspection that suggests replacing the instanceof+subsequent variable declaration and cast sequence with instanceof + pattern. Feel free to try this build. If you have any feedback you can contact me or post new issues to https://youtrack.jetbrains.com. With best regards, Tagir Valeev.
