The Sitecore Item Versioner module adds a new ribbon into the versions chunk of the Content Editor. With the new ribbon it is possible to initially create an item version in all configured languages.
Thanks for this item versioner. It's very useful. For me it would be even better if there would be an option to not just create new empty versions, but also put the values of all properties of the current loaded version to the newly created language versions. Often just small parts (e.g. language path in an url) do change between the versions and so it would be faster to create the items.