2009/9/8 Marcus Moeller:
I personally prefer separate artwork concepts for every major release because these versions should distinguish from each other.
I'd have to agree with Marcus to give each major release its own graphical identity. Not only for the purpose of "identity", but also to prevent users from getting the idea that they still use version x while they are using version y. In my opinion it is always nice to get a new look with a new major release.
Regards, Patrick