4
Yes, it will create a new entry.
I have to question how good an idea it is to have multiple versions in the repository. It will generally pollute the overall value IMHO because when you find a module, then you have to find the other 7 versions that have been posted and make sure you have the latest one. That's assuming that when we have 10 versions of each news module, you can find the one you want to use.
For an easy to use CMS, I don't think we want such a user-vicious repository.
That said, there may be reason to have more than one version available in the repository if you have one for the 2.0.x version and one for 2.3.x or later. However, I think we ought to break those out somehow in categories or areas instead to make it clear.
I know there is some effort going on to redo the repository interface which may help in the future, but don't know the details other than it is somewhat imminent.