Under JDK-8153362, the plan is to add a new -Xlint check. Adding such the check will require addition of -Xlint:-exports to compilation set-up for several modules. So the addition will need synchronized changes in multiple repositories. As that can be tricky, the proposal is to add the -Xlint key, which won't do anything in the first phase, and after a little time, add -Xlint:-exports as needed to together with the actual lint implementation.