In terms of percentages, you'd be safe migrating all existing "Artistic License" projects to "Artistic License v1". AFAIK, there's only one project currently in launchpad under Artistic 2.0, and that's Parrot.
In terms of percentages, you'd be safe migrating all existing "Artistic License" projects to "Artistic License v1". AFAIK, there's only one project currently in launchpad under Artistic 2.0, and that's Parrot.