For anyone interested in IntelliJ-Forge integration progress, it is now possible to test the pre-release version of the plugin.

To install the plugin, go to IntelliJ Settings -> Plugins -> Browse Repositories and search for JBoss Forge IDEA Plugin. To start interacting with Forge press Ctrl+Alt+4. 

Plugin can be also downloaded from:

I'd be more than happy to hear your feedback!

Thanks,

Adam Wyłuda