I am using the Jetbrains Toolbox tool to auto-install updates to IntelliJ IDE. This works well for regular releases.

But how do I use this tool to obtain an Early Access pre-release?

I see a hexagon-shape icon that displays a menu. But the menu items there say nothing about skipping ahead to a pre-release. The items there are only Settings, Roll back to…, and Uninstall. I checked the Settings display, but no options there to enroll in the Early Access program.

Redundant product listing

Scroll down to the item at the bottom that redundantly lists your licensed product, IntelliJ IDEA Ultimate.

Click the Install Again pop-up menu. Choose the pre-release version you want.

After download completes, you will see another product listing at the top of the app list.